ac73b73c16
Since C++11, the C++ standard has a forward progress guarantee [intro.progress], so all such functions must have the `mustprogress` requirement. In addition, from C11 and onwards, loops without a non-zero constant conditional or no conditional are also required to make progress (C11 6.8.5p6). This patch implements these attribute deductions so they can be used by the optimization passes. Differential Revision: https://reviews.llvm.org/D86841
230 lines
11 KiB
Plaintext
230 lines
11 KiB
Plaintext
// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --include-generated-funcs
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// Check that the CHECK lines are generated for clang-generated functions
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// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fopenmp %s -emit-llvm -o - | FileCheck --check-prefix=OMP %s
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// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu %s -emit-llvm -o - | FileCheck --check-prefix=NOOMP %s
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const int size = 1024 * 1024 * 32;
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double A[size];
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void foo(void);
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int main() {
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int i = 0;
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#pragma omp parallel for
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for (i = 0; i < size; ++i) {
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A[i] = 0.0;
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}
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foo();
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return 0;
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}
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void foo(void) {
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int i = 0;
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#pragma omp parallel for
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for (i = 0; i < size; ++i) {
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A[i] = 1.0;
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}
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}
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// OMP-LABEL: @foo(
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// OMP-NEXT: entry:
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// OMP-NEXT: [[I:%.*]] = alloca i32, align 4
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// OMP-NEXT: store i32 0, i32* [[I]], align 4
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// OMP-NEXT: call void (%struct.ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%struct.ident_t* [[GLOB2:@.*]], i32 0, void (i32*, i32*, ...)* bitcast (void (i32*, i32*)* @.omp_outlined. to void (i32*, i32*, ...)*))
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// OMP-NEXT: ret void
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//
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//
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// OMP-LABEL: @.omp_outlined.(
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// OMP-NEXT: entry:
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// OMP-NEXT: [[DOTGLOBAL_TID__ADDR:%.*]] = alloca i32*, align 8
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// OMP-NEXT: [[DOTBOUND_TID__ADDR:%.*]] = alloca i32*, align 8
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// OMP-NEXT: [[DOTOMP_IV:%.*]] = alloca i32, align 4
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// OMP-NEXT: [[TMP:%.*]] = alloca i32, align 4
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// OMP-NEXT: [[DOTOMP_LB:%.*]] = alloca i32, align 4
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// OMP-NEXT: [[DOTOMP_UB:%.*]] = alloca i32, align 4
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// OMP-NEXT: [[DOTOMP_STRIDE:%.*]] = alloca i32, align 4
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// OMP-NEXT: [[DOTOMP_IS_LAST:%.*]] = alloca i32, align 4
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// OMP-NEXT: [[I:%.*]] = alloca i32, align 4
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// OMP-NEXT: store i32* [[DOTGLOBAL_TID_:%.*]], i32** [[DOTGLOBAL_TID__ADDR]], align 8
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// OMP-NEXT: store i32* [[DOTBOUND_TID_:%.*]], i32** [[DOTBOUND_TID__ADDR]], align 8
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// OMP-NEXT: store i32 0, i32* [[DOTOMP_LB]], align 4
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// OMP-NEXT: store i32 33554431, i32* [[DOTOMP_UB]], align 4
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// OMP-NEXT: store i32 1, i32* [[DOTOMP_STRIDE]], align 4
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// OMP-NEXT: store i32 0, i32* [[DOTOMP_IS_LAST]], align 4
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// OMP-NEXT: [[TMP0:%.*]] = load i32*, i32** [[DOTGLOBAL_TID__ADDR]], align 8
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// OMP-NEXT: [[TMP1:%.*]] = load i32, i32* [[TMP0]], align 4
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// OMP-NEXT: call void @__kmpc_for_static_init_4(%struct.ident_t* [[GLOB1:@.*]], i32 [[TMP1]], i32 34, i32* [[DOTOMP_IS_LAST]], i32* [[DOTOMP_LB]], i32* [[DOTOMP_UB]], i32* [[DOTOMP_STRIDE]], i32 1, i32 1)
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// OMP-NEXT: [[TMP2:%.*]] = load i32, i32* [[DOTOMP_UB]], align 4
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// OMP-NEXT: [[CMP:%.*]] = icmp sgt i32 [[TMP2]], 33554431
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// OMP-NEXT: br i1 [[CMP]], label [[COND_TRUE:%.*]], label [[COND_FALSE:%.*]]
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// OMP: cond.true:
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// OMP-NEXT: br label [[COND_END:%.*]]
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// OMP: cond.false:
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// OMP-NEXT: [[TMP3:%.*]] = load i32, i32* [[DOTOMP_UB]], align 4
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// OMP-NEXT: br label [[COND_END]]
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// OMP: cond.end:
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// OMP-NEXT: [[COND:%.*]] = phi i32 [ 33554431, [[COND_TRUE]] ], [ [[TMP3]], [[COND_FALSE]] ]
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// OMP-NEXT: store i32 [[COND]], i32* [[DOTOMP_UB]], align 4
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// OMP-NEXT: [[TMP4:%.*]] = load i32, i32* [[DOTOMP_LB]], align 4
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// OMP-NEXT: store i32 [[TMP4]], i32* [[DOTOMP_IV]], align 4
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// OMP-NEXT: br label [[OMP_INNER_FOR_COND:%.*]]
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// OMP: omp.inner.for.cond:
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// OMP-NEXT: [[TMP5:%.*]] = load i32, i32* [[DOTOMP_IV]], align 4
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// OMP-NEXT: [[TMP6:%.*]] = load i32, i32* [[DOTOMP_UB]], align 4
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// OMP-NEXT: [[CMP1:%.*]] = icmp sle i32 [[TMP5]], [[TMP6]]
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// OMP-NEXT: br i1 [[CMP1]], label [[OMP_INNER_FOR_BODY:%.*]], label [[OMP_INNER_FOR_END:%.*]]
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// OMP: omp.inner.for.body:
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// OMP-NEXT: [[TMP7:%.*]] = load i32, i32* [[DOTOMP_IV]], align 4
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// OMP-NEXT: [[MUL:%.*]] = mul nsw i32 [[TMP7]], 1
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// OMP-NEXT: [[ADD:%.*]] = add nsw i32 0, [[MUL]]
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// OMP-NEXT: store i32 [[ADD]], i32* [[I]], align 4
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// OMP-NEXT: [[TMP8:%.*]] = load i32, i32* [[I]], align 4
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// OMP-NEXT: [[IDXPROM:%.*]] = sext i32 [[TMP8]] to i64
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// OMP-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds [33554432 x double], [33554432 x double]* @A, i64 0, i64 [[IDXPROM]]
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// OMP-NEXT: store double 1.000000e+00, double* [[ARRAYIDX]], align 8
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// OMP-NEXT: br label [[OMP_BODY_CONTINUE:%.*]]
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// OMP: omp.body.continue:
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// OMP-NEXT: br label [[OMP_INNER_FOR_INC:%.*]]
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// OMP: omp.inner.for.inc:
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// OMP-NEXT: [[TMP9:%.*]] = load i32, i32* [[DOTOMP_IV]], align 4
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// OMP-NEXT: [[ADD2:%.*]] = add nsw i32 [[TMP9]], 1
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// OMP-NEXT: store i32 [[ADD2]], i32* [[DOTOMP_IV]], align 4
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// OMP-NEXT: br label [[OMP_INNER_FOR_COND]]
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// OMP: omp.inner.for.end:
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// OMP-NEXT: br label [[OMP_LOOP_EXIT:%.*]]
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// OMP: omp.loop.exit:
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// OMP-NEXT: call void @__kmpc_for_static_fini(%struct.ident_t* [[GLOB1]], i32 [[TMP1]])
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// OMP-NEXT: ret void
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//
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//
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// OMP-LABEL: @main(
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// OMP-NEXT: entry:
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// OMP-NEXT: [[RETVAL:%.*]] = alloca i32, align 4
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// OMP-NEXT: [[I:%.*]] = alloca i32, align 4
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// OMP-NEXT: store i32 0, i32* [[RETVAL]], align 4
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// OMP-NEXT: store i32 0, i32* [[I]], align 4
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// OMP-NEXT: call void (%struct.ident_t*, i32, void (i32*, i32*, ...)*, ...) @__kmpc_fork_call(%struct.ident_t* [[GLOB2]], i32 0, void (i32*, i32*, ...)* bitcast (void (i32*, i32*)* @.omp_outlined..1 to void (i32*, i32*, ...)*))
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// OMP-NEXT: call void @foo()
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// OMP-NEXT: ret i32 0
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//
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//
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// OMP-LABEL: @.omp_outlined..1(
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// OMP-NEXT: entry:
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// OMP-NEXT: [[DOTGLOBAL_TID__ADDR:%.*]] = alloca i32*, align 8
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// OMP-NEXT: [[DOTBOUND_TID__ADDR:%.*]] = alloca i32*, align 8
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// OMP-NEXT: [[DOTOMP_IV:%.*]] = alloca i32, align 4
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// OMP-NEXT: [[TMP:%.*]] = alloca i32, align 4
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// OMP-NEXT: [[DOTOMP_LB:%.*]] = alloca i32, align 4
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// OMP-NEXT: [[DOTOMP_UB:%.*]] = alloca i32, align 4
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// OMP-NEXT: [[DOTOMP_STRIDE:%.*]] = alloca i32, align 4
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// OMP-NEXT: [[DOTOMP_IS_LAST:%.*]] = alloca i32, align 4
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// OMP-NEXT: [[I:%.*]] = alloca i32, align 4
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// OMP-NEXT: store i32* [[DOTGLOBAL_TID_:%.*]], i32** [[DOTGLOBAL_TID__ADDR]], align 8
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// OMP-NEXT: store i32* [[DOTBOUND_TID_:%.*]], i32** [[DOTBOUND_TID__ADDR]], align 8
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// OMP-NEXT: store i32 0, i32* [[DOTOMP_LB]], align 4
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// OMP-NEXT: store i32 33554431, i32* [[DOTOMP_UB]], align 4
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// OMP-NEXT: store i32 1, i32* [[DOTOMP_STRIDE]], align 4
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// OMP-NEXT: store i32 0, i32* [[DOTOMP_IS_LAST]], align 4
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// OMP-NEXT: [[TMP0:%.*]] = load i32*, i32** [[DOTGLOBAL_TID__ADDR]], align 8
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// OMP-NEXT: [[TMP1:%.*]] = load i32, i32* [[TMP0]], align 4
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// OMP-NEXT: call void @__kmpc_for_static_init_4(%struct.ident_t* [[GLOB1]], i32 [[TMP1]], i32 34, i32* [[DOTOMP_IS_LAST]], i32* [[DOTOMP_LB]], i32* [[DOTOMP_UB]], i32* [[DOTOMP_STRIDE]], i32 1, i32 1)
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// OMP-NEXT: [[TMP2:%.*]] = load i32, i32* [[DOTOMP_UB]], align 4
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// OMP-NEXT: [[CMP:%.*]] = icmp sgt i32 [[TMP2]], 33554431
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// OMP-NEXT: br i1 [[CMP]], label [[COND_TRUE:%.*]], label [[COND_FALSE:%.*]]
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// OMP: cond.true:
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// OMP-NEXT: br label [[COND_END:%.*]]
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// OMP: cond.false:
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// OMP-NEXT: [[TMP3:%.*]] = load i32, i32* [[DOTOMP_UB]], align 4
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// OMP-NEXT: br label [[COND_END]]
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// OMP: cond.end:
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// OMP-NEXT: [[COND:%.*]] = phi i32 [ 33554431, [[COND_TRUE]] ], [ [[TMP3]], [[COND_FALSE]] ]
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// OMP-NEXT: store i32 [[COND]], i32* [[DOTOMP_UB]], align 4
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// OMP-NEXT: [[TMP4:%.*]] = load i32, i32* [[DOTOMP_LB]], align 4
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// OMP-NEXT: store i32 [[TMP4]], i32* [[DOTOMP_IV]], align 4
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// OMP-NEXT: br label [[OMP_INNER_FOR_COND:%.*]]
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// OMP: omp.inner.for.cond:
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// OMP-NEXT: [[TMP5:%.*]] = load i32, i32* [[DOTOMP_IV]], align 4
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// OMP-NEXT: [[TMP6:%.*]] = load i32, i32* [[DOTOMP_UB]], align 4
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// OMP-NEXT: [[CMP1:%.*]] = icmp sle i32 [[TMP5]], [[TMP6]]
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// OMP-NEXT: br i1 [[CMP1]], label [[OMP_INNER_FOR_BODY:%.*]], label [[OMP_INNER_FOR_END:%.*]]
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// OMP: omp.inner.for.body:
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// OMP-NEXT: [[TMP7:%.*]] = load i32, i32* [[DOTOMP_IV]], align 4
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// OMP-NEXT: [[MUL:%.*]] = mul nsw i32 [[TMP7]], 1
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// OMP-NEXT: [[ADD:%.*]] = add nsw i32 0, [[MUL]]
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// OMP-NEXT: store i32 [[ADD]], i32* [[I]], align 4
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// OMP-NEXT: [[TMP8:%.*]] = load i32, i32* [[I]], align 4
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// OMP-NEXT: [[IDXPROM:%.*]] = sext i32 [[TMP8]] to i64
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// OMP-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds [33554432 x double], [33554432 x double]* @A, i64 0, i64 [[IDXPROM]]
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// OMP-NEXT: store double 0.000000e+00, double* [[ARRAYIDX]], align 8
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// OMP-NEXT: br label [[OMP_BODY_CONTINUE:%.*]]
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// OMP: omp.body.continue:
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// OMP-NEXT: br label [[OMP_INNER_FOR_INC:%.*]]
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// OMP: omp.inner.for.inc:
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// OMP-NEXT: [[TMP9:%.*]] = load i32, i32* [[DOTOMP_IV]], align 4
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// OMP-NEXT: [[ADD2:%.*]] = add nsw i32 [[TMP9]], 1
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// OMP-NEXT: store i32 [[ADD2]], i32* [[DOTOMP_IV]], align 4
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// OMP-NEXT: br label [[OMP_INNER_FOR_COND]]
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// OMP: omp.inner.for.end:
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// OMP-NEXT: br label [[OMP_LOOP_EXIT:%.*]]
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// OMP: omp.loop.exit:
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// OMP-NEXT: call void @__kmpc_for_static_fini(%struct.ident_t* [[GLOB1]], i32 [[TMP1]])
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// OMP-NEXT: ret void
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//
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//
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// NOOMP-LABEL: @main(
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// NOOMP-NEXT: entry:
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// NOOMP-NEXT: [[RETVAL:%.*]] = alloca i32, align 4
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// NOOMP-NEXT: [[I:%.*]] = alloca i32, align 4
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// NOOMP-NEXT: store i32 0, i32* [[RETVAL]], align 4
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// NOOMP-NEXT: store i32 0, i32* [[I]], align 4
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// NOOMP-NEXT: store i32 0, i32* [[I]], align 4
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// NOOMP-NEXT: br label [[FOR_COND:%.*]]
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// NOOMP: for.cond:
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// NOOMP-NEXT: [[TMP0:%.*]] = load i32, i32* [[I]], align 4
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// NOOMP-NEXT: [[CMP:%.*]] = icmp slt i32 [[TMP0]], 33554432
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// NOOMP-NEXT: br i1 [[CMP]], label [[FOR_BODY:%.*]], label [[FOR_END:%.*]]
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// NOOMP: for.body:
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// NOOMP-NEXT: [[TMP1:%.*]] = load i32, i32* [[I]], align 4
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// NOOMP-NEXT: [[IDXPROM:%.*]] = sext i32 [[TMP1]] to i64
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// NOOMP-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds [33554432 x double], [33554432 x double]* @A, i64 0, i64 [[IDXPROM]]
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// NOOMP-NEXT: store double 0.000000e+00, double* [[ARRAYIDX]], align 8
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// NOOMP-NEXT: br label [[FOR_INC:%.*]]
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// NOOMP: for.inc:
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// NOOMP-NEXT: [[TMP2:%.*]] = load i32, i32* [[I]], align 4
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// NOOMP-NEXT: [[INC:%.*]] = add nsw i32 [[TMP2]], 1
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// NOOMP-NEXT: store i32 [[INC]], i32* [[I]], align 4
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// NOOMP-NEXT: br label [[FOR_COND]], [[LOOP2:!llvm.loop !.*]]
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// NOOMP: for.end:
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// NOOMP-NEXT: call void @foo()
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// NOOMP-NEXT: ret i32 0
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//
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//
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// NOOMP-LABEL: @foo(
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// NOOMP-NEXT: entry:
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// NOOMP-NEXT: [[I:%.*]] = alloca i32, align 4
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// NOOMP-NEXT: store i32 0, i32* [[I]], align 4
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// NOOMP-NEXT: store i32 0, i32* [[I]], align 4
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// NOOMP-NEXT: br label [[FOR_COND:%.*]]
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// NOOMP: for.cond:
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// NOOMP-NEXT: [[TMP0:%.*]] = load i32, i32* [[I]], align 4
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// NOOMP-NEXT: [[CMP:%.*]] = icmp slt i32 [[TMP0]], 33554432
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// NOOMP-NEXT: br i1 [[CMP]], label [[FOR_BODY:%.*]], label [[FOR_END:%.*]]
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// NOOMP: for.body:
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// NOOMP-NEXT: [[TMP1:%.*]] = load i32, i32* [[I]], align 4
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// NOOMP-NEXT: [[IDXPROM:%.*]] = sext i32 [[TMP1]] to i64
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// NOOMP-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds [33554432 x double], [33554432 x double]* @A, i64 0, i64 [[IDXPROM]]
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// NOOMP-NEXT: store double 1.000000e+00, double* [[ARRAYIDX]], align 8
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// NOOMP-NEXT: br label [[FOR_INC:%.*]]
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// NOOMP: for.inc:
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// NOOMP-NEXT: [[TMP2:%.*]] = load i32, i32* [[I]], align 4
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// NOOMP-NEXT: [[INC:%.*]] = add nsw i32 [[TMP2]], 1
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// NOOMP-NEXT: store i32 [[INC]], i32* [[I]], align 4
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// NOOMP-NEXT: br label [[FOR_COND]], [[LOOP4:!llvm.loop !.*]]
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// NOOMP: for.end:
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// NOOMP-NEXT: ret void
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//
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