24fe1d4fd6
We can infer the range/nonnull attributes in non-interprocedural SCCP as well. The results may be better after the function has been simplified.
175 lines
4.9 KiB
LLVM
175 lines
4.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
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; RUN: opt < %s -passes=sccp -S | FileCheck %s
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define i1 @float.1(i1 %cmp) {
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; CHECK-LABEL: define i1 @float.1(
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; CHECK-SAME: i1 [[CMP:%.*]]) {
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; CHECK-NEXT: [[ENTRY:.*:]]
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; CHECK-NEXT: br i1 [[CMP]], label %[[IF_TRUE:.*]], label %[[END:.*]]
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; CHECK: [[IF_TRUE]]:
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; CHECK-NEXT: br label %[[END]]
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; CHECK: [[END]]:
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; CHECK-NEXT: ret i1 true
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;
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entry:
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br i1 %cmp, label %if.true, label %end
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if.true:
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br label %end
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end:
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%p = phi float [ 1.0, %entry ], [ 1.0, %if.true]
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%c = fcmp ueq float %p, 1.0
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ret i1 %c
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}
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define i1 @float.2(i1 %cmp) {
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; CHECK-LABEL: define i1 @float.2(
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; CHECK-SAME: i1 [[CMP:%.*]]) {
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; CHECK-NEXT: [[ENTRY:.*]]:
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; CHECK-NEXT: br i1 [[CMP]], label %[[IF_TRUE:.*]], label %[[END:.*]]
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; CHECK: [[IF_TRUE]]:
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; CHECK-NEXT: br label %[[END]]
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; CHECK: [[END]]:
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; CHECK-NEXT: [[P:%.*]] = phi float [ 1.000000e+00, %[[ENTRY]] ], [ 2.000000e+00, %[[IF_TRUE]] ]
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; CHECK-NEXT: [[C:%.*]] = fcmp ueq float [[P]], 1.000000e+00
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; CHECK-NEXT: ret i1 [[C]]
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;
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entry:
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br i1 %cmp, label %if.true, label %end
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if.true:
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br label %end
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end:
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%p = phi float [ 1.0, %entry ], [ 2.0, %if.true]
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%c = fcmp ueq float %p, 1.0
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ret i1 %c
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}
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define i1 @float.3(float %f, i1 %cmp) {
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; CHECK-LABEL: define i1 @float.3(
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; CHECK-SAME: float [[F:%.*]], i1 [[CMP:%.*]]) {
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; CHECK-NEXT: [[ENTRY:.*]]:
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; CHECK-NEXT: br i1 [[CMP]], label %[[IF_TRUE:.*]], label %[[END:.*]]
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; CHECK: [[IF_TRUE]]:
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; CHECK-NEXT: br label %[[END]]
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; CHECK: [[END]]:
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; CHECK-NEXT: [[P:%.*]] = phi float [ 1.000000e+00, %[[ENTRY]] ], [ [[F]], %[[IF_TRUE]] ]
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; CHECK-NEXT: [[C:%.*]] = fcmp ueq float [[P]], 1.000000e+00
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; CHECK-NEXT: ret i1 [[C]]
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;
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entry:
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br i1 %cmp, label %if.true, label %end
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if.true:
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br label %end
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end:
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%p = phi float [ 1.0, %entry ], [ %f, %if.true]
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%c = fcmp ueq float %p, 1.0
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ret i1 %c
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}
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define i1 @float.4_unreachable(float %f, i1 %cmp) {
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; CHECK-LABEL: define i1 @float.4_unreachable(
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; CHECK-SAME: float [[F:%.*]], i1 [[CMP:%.*]]) {
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; CHECK-NEXT: [[ENTRY:.*:]]
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; CHECK-NEXT: br i1 [[CMP]], label %[[IF_TRUE:.*]], label %[[END:.*]]
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; CHECK: [[IF_TRUE]]:
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; CHECK-NEXT: br label %[[END]]
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; CHECK: [[END]]:
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; CHECK-NEXT: ret i1 false
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;
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entry:
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br i1 %cmp, label %if.true, label %end
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if.true:
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br label %end
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dead:
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br label %end
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end:
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%p = phi float [ 1.0, %entry ], [ 1.0, %if.true], [ %f, %dead ]
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%c = fcmp une float %p, 1.0
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ret i1 %c
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}
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define <2 x i16> @phi_vector_merge1(i1 %c, <2 x i8> %a) {
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; CHECK-LABEL: define range(i16 2, 259) <2 x i16> @phi_vector_merge1(
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; CHECK-SAME: i1 [[C:%.*]], <2 x i8> [[A:%.*]]) {
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; CHECK-NEXT: [[ENTRY:.*]]:
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; CHECK-NEXT: [[ZEXT:%.*]] = zext <2 x i8> [[A]] to <2 x i16>
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; CHECK-NEXT: br i1 [[C]], label %[[IF:.*]], label %[[JOIN:.*]]
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; CHECK: [[IF]]:
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; CHECK-NEXT: br label %[[JOIN]]
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; CHECK: [[JOIN]]:
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; CHECK-NEXT: [[PHI:%.*]] = phi <2 x i16> [ [[ZEXT]], %[[ENTRY]] ], [ <i16 1, i16 2>, %[[IF]] ]
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; CHECK-NEXT: [[ADD:%.*]] = add nuw nsw <2 x i16> [[PHI]], <i16 2, i16 3>
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; CHECK-NEXT: ret <2 x i16> [[ADD]]
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;
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entry:
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%zext = zext <2 x i8> %a to <2 x i16>
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br i1 %c, label %if, label %join
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if:
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br label %join
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join:
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%phi = phi <2 x i16> [ %zext, %entry ], [ <i16 1, i16 2>, %if ]
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%add = add <2 x i16> %phi, <i16 2, i16 3>
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ret <2 x i16> %add
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}
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define <2 x i16> @phi_vector_merge2(i1 %c, <2 x i8> %a) {
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; CHECK-LABEL: define range(i16 2, 259) <2 x i16> @phi_vector_merge2(
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; CHECK-SAME: i1 [[C:%.*]], <2 x i8> [[A:%.*]]) {
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; CHECK-NEXT: [[ENTRY:.*]]:
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; CHECK-NEXT: [[ZEXT:%.*]] = zext <2 x i8> [[A]] to <2 x i16>
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; CHECK-NEXT: br i1 [[C]], label %[[IF:.*]], label %[[JOIN:.*]]
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; CHECK: [[IF]]:
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; CHECK-NEXT: br label %[[JOIN]]
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; CHECK: [[JOIN]]:
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; CHECK-NEXT: [[PHI:%.*]] = phi <2 x i16> [ <i16 1, i16 2>, %[[ENTRY]] ], [ [[ZEXT]], %[[IF]] ]
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; CHECK-NEXT: [[ADD:%.*]] = add nuw nsw <2 x i16> [[PHI]], <i16 2, i16 3>
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; CHECK-NEXT: ret <2 x i16> [[ADD]]
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;
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entry:
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%zext = zext <2 x i8> %a to <2 x i16>
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br i1 %c, label %if, label %join
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if:
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br label %join
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join:
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%phi = phi <2 x i16> [ <i16 1, i16 2>, %entry ], [ %zext, %if ]
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%add = add <2 x i16> %phi, <i16 2, i16 3>
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ret <2 x i16> %add
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}
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define <2 x float> @phi_vector_merge_float(i1 %c) {
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; CHECK-LABEL: define <2 x float> @phi_vector_merge_float(
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; CHECK-SAME: i1 [[C:%.*]]) {
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; CHECK-NEXT: [[ENTRY:.*]]:
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; CHECK-NEXT: br i1 [[C]], label %[[IF:.*]], label %[[JOIN:.*]]
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; CHECK: [[IF]]:
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; CHECK-NEXT: br label %[[JOIN]]
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; CHECK: [[JOIN]]:
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; CHECK-NEXT: [[PHI:%.*]] = phi <2 x float> [ <float 2.000000e+00, float 1.000000e+00>, %[[ENTRY]] ], [ <float 1.000000e+00, float 2.000000e+00>, %[[IF]] ]
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; CHECK-NEXT: ret <2 x float> [[PHI]]
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;
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entry:
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br i1 %c, label %if, label %join
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if:
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br label %join
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join:
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%phi = phi <2 x float> [ <float 2.0, float 1.0>, %entry ], [ <float 1.0, float 2.0>, %if ]
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ret <2 x float> %phi
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}
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