forked from OSchip/llvm-project
48 lines
1.3 KiB
LLVM
48 lines
1.3 KiB
LLVM
; RUN: opt -consthoist -S < %s | FileCheck %s
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target triple = "x86_64--"
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; We don't want to convert constant divides because the benefit from converting
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; them to a mul in the backend is larget than constant materialization savings.
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define void @signed_const_division(i64 %in1, i64 %in2, i64* %addr) {
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; CHECK-LABEL: @signed_const_division
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; CHECK: %res1 = sdiv i64 %l1, 4294967296
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; CHECK: %res2 = srem i64 %l2, 4294967296
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entry:
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br label %loop
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loop:
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%l1 = phi i64 [%res1, %loop], [%in1, %entry]
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%l2 = phi i64 [%res2, %loop], [%in2, %entry]
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%res1 = sdiv i64 %l1, 4294967296
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store volatile i64 %res1, i64* %addr
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%res2 = srem i64 %l2, 4294967296
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store volatile i64 %res2, i64* %addr
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%again = icmp eq i64 %res1, %res2
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br i1 %again, label %loop, label %end
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end:
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ret void
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}
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define void @unsigned_const_division(i64 %in1, i64 %in2, i64* %addr) {
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; CHECK-LABEL: @unsigned_const_division
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; CHECK: %res1 = udiv i64 %l1, 4294967296
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; CHECK: %res2 = urem i64 %l2, 4294967296
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entry:
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br label %loop
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loop:
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%l1 = phi i64 [%res1, %loop], [%in1, %entry]
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%l2 = phi i64 [%res2, %loop], [%in2, %entry]
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%res1 = udiv i64 %l1, 4294967296
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store volatile i64 %res1, i64* %addr
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%res2 = urem i64 %l2, 4294967296
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store volatile i64 %res2, i64* %addr
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%again = icmp eq i64 %res1, %res2
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br i1 %again, label %loop, label %end
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end:
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ret void
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}
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