c23b4fbdbb
Now that #149310 has restricted lifetime intrinsics to only work on allocas, we can also drop the explicit size argument. Instead, the size is implied by the alloca. This removes the ability to only mark a prefix of an alloca alive/dead. We never used that capability, so we should remove the need to handle that possibility everywhere (though many key places, including stack coloring, did not actually respect this).
93 lines
3.0 KiB
LLVM
93 lines
3.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --include-generated-funcs
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; RUN: opt -S -passes=verify,iroutliner -ir-outlining-no-cost < %s | FileCheck %s
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; Show that we do not extract similar regions that would involve the splitting
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; of phi nodes on exit.
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define void @function1(ptr %a, ptr %b) {
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entry:
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%0 = alloca i32, align 4
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%c = load i32, ptr %0, align 4
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br label %test1
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test1:
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%e = load i32, ptr %0, align 4
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br label %first
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test:
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%d = load i32, ptr %0, align 4
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br label %first
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dummy:
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ret void
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first:
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%1 = phi i32 [ %c, %test ], [ %e, %test1 ]
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ret void
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}
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define void @function2(ptr %a, ptr %b) {
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entry:
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%0 = alloca i32, align 4
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%c = load i32, ptr %0, align 4
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br label %test1
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test1:
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%e = load i32, ptr %0, align 4
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br label %first
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test:
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%d = load i32, ptr %0, align 4
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br label %first
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dummy:
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ret void
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first:
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%1 = phi i32 [ %c, %test ], [ %e, %test1 ]
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ret void
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}
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; CHECK-LABEL: @function1(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[DOTCE_LOC:%.*]] = alloca i32, align 4
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; CHECK-NEXT: [[TMP0:%.*]] = alloca i32, align 4
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; CHECK-NEXT: call void @llvm.lifetime.start.p0(ptr [[DOTCE_LOC]])
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; CHECK-NEXT: call void @outlined_ir_func_0(ptr [[TMP0]], ptr [[DOTCE_LOC]])
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; CHECK-NEXT: [[DOTCE_RELOAD:%.*]] = load i32, ptr [[DOTCE_LOC]], align 4
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; CHECK-NEXT: call void @llvm.lifetime.end.p0(ptr [[DOTCE_LOC]])
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; CHECK-NEXT: br label [[FIRST:%.*]]
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; CHECK: dummy:
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; CHECK-NEXT: ret void
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; CHECK: first:
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; CHECK-NEXT: [[TMP1:%.*]] = phi i32 [ [[DOTCE_RELOAD]], [[ENTRY:%.*]] ]
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; CHECK-NEXT: ret void
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;
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;
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; CHECK-LABEL: @function2(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[DOTCE_LOC:%.*]] = alloca i32, align 4
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; CHECK-NEXT: [[TMP0:%.*]] = alloca i32, align 4
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; CHECK-NEXT: call void @llvm.lifetime.start.p0(ptr [[DOTCE_LOC]])
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; CHECK-NEXT: call void @outlined_ir_func_0(ptr [[TMP0]], ptr [[DOTCE_LOC]])
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; CHECK-NEXT: [[DOTCE_RELOAD:%.*]] = load i32, ptr [[DOTCE_LOC]], align 4
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; CHECK-NEXT: call void @llvm.lifetime.end.p0(ptr [[DOTCE_LOC]])
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; CHECK-NEXT: br label [[FIRST:%.*]]
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; CHECK: dummy:
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; CHECK-NEXT: ret void
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; CHECK: first:
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; CHECK-NEXT: [[TMP1:%.*]] = phi i32 [ [[DOTCE_RELOAD]], [[ENTRY:%.*]] ]
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; CHECK-NEXT: ret void
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;
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;
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; CHECK-LABEL: define internal void @outlined_ir_func_0(
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; CHECK-NEXT: newFuncRoot:
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; CHECK-NEXT: br label [[ENTRY_TO_OUTLINE:%.*]]
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; CHECK: entry_to_outline:
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; CHECK-NEXT: [[C:%.*]] = load i32, ptr [[TMP0:%.*]], align 4
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; CHECK-NEXT: br label [[TEST1:%.*]]
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; CHECK: test1:
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; CHECK-NEXT: [[E:%.*]] = load i32, ptr [[TMP0]], align 4
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; CHECK-NEXT: br label [[FIRST_SPLIT:%.*]]
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; CHECK: test:
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; CHECK-NEXT: [[D:%.*]] = load i32, ptr [[TMP0]], align 4
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; CHECK-NEXT: br label [[FIRST_SPLIT]]
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; CHECK: first.split:
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; CHECK-NEXT: [[DOTCE:%.*]] = phi i32 [ [[C]], [[TEST:%.*]] ], [ [[E]], [[TEST1]] ]
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; CHECK-NEXT: br label [[FIRST_EXITSTUB:%.*]]
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; CHECK: first.exitStub:
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; CHECK-NEXT: store i32 [[DOTCE]], ptr [[TMP1:%.*]], align 4
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; CHECK-NEXT: ret void
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;
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