derek.holloway
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64 lines
2.0 KiB
LLVM
64 lines
2.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -passes=instcombine -S | FileCheck %s
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define i32 @test_srem_canonicalize_op0(i32 %x, i32 %y) {
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; CHECK-LABEL: @test_srem_canonicalize_op0(
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; CHECK-NEXT: [[TMP1:%.*]] = srem i32 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[SREM:%.*]] = sub nsw i32 0, [[TMP1]]
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; CHECK-NEXT: ret i32 [[SREM]]
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;
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%neg = sub nsw i32 0, %x
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%srem = srem i32 %neg, %y
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ret i32 %srem
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}
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; (X srem -Y) is not equal to -(X srem Y), don't canonicalize.
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define i32 @test_srem_canonicalize_op1(i32 %x, i32 %z) {
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; CHECK-LABEL: @test_srem_canonicalize_op1(
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; CHECK-NEXT: [[Y:%.*]] = mul i32 [[Z:%.*]], 3
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; CHECK-NEXT: [[NEG:%.*]] = sub nsw i32 0, [[X:%.*]]
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; CHECK-NEXT: [[SREM:%.*]] = srem i32 [[Y]], [[NEG]]
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; CHECK-NEXT: ret i32 [[SREM]]
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;
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%y = mul i32 %z, 3
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%neg = sub nsw i32 0, %x
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%srem = srem i32 %y, %neg
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ret i32 %srem
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}
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define i32 @test_srem_canonicalize_nonsw(i32 %x, i32 %y) {
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; CHECK-LABEL: @test_srem_canonicalize_nonsw(
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; CHECK-NEXT: [[NEG:%.*]] = sub i32 0, [[X:%.*]]
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; CHECK-NEXT: [[SREM:%.*]] = srem i32 [[NEG]], [[Y:%.*]]
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; CHECK-NEXT: ret i32 [[SREM]]
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;
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%neg = sub i32 0, %x
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%srem = srem i32 %neg, %y
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ret i32 %srem
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}
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define <2 x i32> @test_srem_canonicalize_vec(<2 x i32> %x, <2 x i32> %y) {
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; CHECK-LABEL: @test_srem_canonicalize_vec(
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; CHECK-NEXT: [[TMP1:%.*]] = srem <2 x i32> [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[SREM:%.*]] = sub nsw <2 x i32> zeroinitializer, [[TMP1]]
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; CHECK-NEXT: ret <2 x i32> [[SREM]]
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;
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%neg = sub nsw <2 x i32> <i32 0, i32 0>, %x
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%srem = srem <2 x i32> %neg, %y
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ret <2 x i32> %srem
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}
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define i32 @test_srem_canonicalize_multiple_uses(i32 %x, i32 %y) {
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; CHECK-LABEL: @test_srem_canonicalize_multiple_uses(
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; CHECK-NEXT: [[NEG:%.*]] = sub nsw i32 0, [[X:%.*]]
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; CHECK-NEXT: [[SREM:%.*]] = srem i32 [[NEG]], [[Y:%.*]]
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; CHECK-NEXT: [[SREM2:%.*]] = srem i32 [[SREM]], [[NEG]]
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; CHECK-NEXT: ret i32 [[SREM2]]
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;
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%neg = sub nsw i32 0, %x
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%srem = srem i32 %neg, %y
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%srem2 = srem i32 %srem, %neg
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ret i32 %srem2
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}
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