forked from OSchip/llvm-project
53 lines
1.4 KiB
LLVM
53 lines
1.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -instsimplify -S | FileCheck %s
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define float @fdiv_constant_fold() {
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; CHECK-LABEL: @fdiv_constant_fold(
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; CHECK-NEXT: ret float 1.500000e+00
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;
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%f = fdiv float 3.0, 2.0
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ret float %f
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}
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define float @frem_constant_fold() {
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; CHECK-LABEL: @frem_constant_fold(
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; CHECK-NEXT: ret float 1.000000e+00
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;
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%f = frem float 3.0, 2.0
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ret float %f
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}
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define double @fmul_fdiv_common_operand(double %x, double %y) {
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; CHECK-LABEL: @fmul_fdiv_common_operand(
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; CHECK-NEXT: ret double %x
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;
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%m = fmul double %x, %y
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%d = fdiv reassoc nnan double %m, %y
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ret double %d
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}
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; Negative test - the fdiv must be reassociative and not allow NaNs.
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define double @fmul_fdiv_common_operand_too_strict(double %x, double %y) {
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; CHECK-LABEL: @fmul_fdiv_common_operand_too_strict(
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; CHECK-NEXT: [[M:%.*]] = fmul fast double %x, %y
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; CHECK-NEXT: [[D:%.*]] = fdiv reassoc double [[M]], %y
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; CHECK-NEXT: ret double [[D]]
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;
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%m = fmul fast double %x, %y
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%d = fdiv reassoc double %m, %y
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ret double %d
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}
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; Commute the fmul operands. Use a vector type to verify that works too.
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define <2 x float> @fmul_fdiv_common_operand_commute_vec(<2 x float> %x, <2 x float> %y) {
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; CHECK-LABEL: @fmul_fdiv_common_operand_commute_vec(
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; CHECK-NEXT: ret <2 x float> %x
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;
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%m = fmul <2 x float> %y, %x
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%d = fdiv fast <2 x float> %m, %y
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ret <2 x float> %d
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}
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