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Diffstat (limited to 'test/CodeGen/AArch64/analyzecmp.ll')
| -rw-r--r-- | test/CodeGen/AArch64/analyzecmp.ll | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/test/CodeGen/AArch64/analyzecmp.ll b/test/CodeGen/AArch64/analyzecmp.ll new file mode 100644 index 0000000..8962505 --- /dev/null +++ b/test/CodeGen/AArch64/analyzecmp.ll @@ -0,0 +1,32 @@ +; RUN: llc -O3 -mcpu=cortex-a57 < %s | FileCheck %s + +; CHECK-LABLE: @test +; CHECK: tst [[CMP:x[0-9]+]], #0x8000000000000000 +; CHECK: csel [[R0:x[0-9]+]], [[S0:x[0-9]+]], [[S1:x[0-9]+]], eq +; CHECK: csel [[R1:x[0-9]+]], [[S2:x[0-9]+]], [[S3:x[0-9]+]], eq +target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128" +target triple = "arm64--linux-gnueabi" + +define void @test(i64 %a, i64* %ptr1, i64* %ptr2) #0 align 2 { +entry: + %conv = and i64 %a, 4294967295 + %add = add nsw i64 %conv, -1 + %div = sdiv i64 %add, 64 + %rem = srem i64 %add, 64 + %cmp = icmp slt i64 %rem, 0 + br i1 %cmp, label %if.then, label %exit + +if.then: + %add2 = add nsw i64 %rem, 64 + %add3 = add i64 %div, -1 + br label %exit + +exit: + %__n = phi i64 [ %add3, %if.then ], [ %div, %entry ] + %__n.0 = phi i64 [ %add2, %if.then ], [ %rem, %entry ] + store i64 %__n, i64* %ptr1 + store i64 %__n.0, i64* %ptr2 + ret void +} + + |