diff options
Diffstat (limited to 'llvm/test/Transforms/CodeGenPrepare/X86/optimizeSelect-DT.ll')
| -rw-r--r-- | llvm/test/Transforms/CodeGenPrepare/X86/optimizeSelect-DT.ll | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/llvm/test/Transforms/CodeGenPrepare/X86/optimizeSelect-DT.ll b/llvm/test/Transforms/CodeGenPrepare/X86/optimizeSelect-DT.ll new file mode 100644 index 00000000000..dc638425355 --- /dev/null +++ b/llvm/test/Transforms/CodeGenPrepare/X86/optimizeSelect-DT.ll @@ -0,0 +1,34 @@ +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py +; RUN: opt -S -codegenprepare < %s | FileCheck %s + +target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" +target triple = "x86_64-unknown-linux-gnu" + +define i1 @PR41004(i32 %x, i32 %y, i32 %t1) { +; CHECK-LABEL: @PR41004( +; CHECK-NEXT: entry: +; CHECK-NEXT: [[T0:%.*]] = icmp eq i32 [[Y:%.*]], 1 +; CHECK-NEXT: br i1 [[T0]], label [[SELECT_TRUE_SINK:%.*]], label [[SELECT_END:%.*]] +; CHECK: select.true.sink: +; CHECK-NEXT: [[REM:%.*]] = srem i32 [[X:%.*]], 2 +; CHECK-NEXT: br label [[SELECT_END]] +; CHECK: select.end: +; CHECK-NEXT: [[MUL:%.*]] = phi i32 [ [[REM]], [[SELECT_TRUE_SINK]] ], [ 0, [[ENTRY:%.*]] ] +; CHECK-NEXT: [[TMP0:%.*]] = call { i32, i1 } @llvm.usub.with.overflow.i32(i32 [[T1:%.*]], i32 1) +; CHECK-NEXT: [[MATH:%.*]] = extractvalue { i32, i1 } [[TMP0]], 0 +; CHECK-NEXT: [[OV:%.*]] = extractvalue { i32, i1 } [[TMP0]], 1 +; CHECK-NEXT: [[ADD:%.*]] = add i32 [[MATH]], [[MUL]] +; CHECK-NEXT: ret i1 [[OV]] +; +entry: + %rem = srem i32 %x, 2 + %t0 = icmp eq i32 %y, 1 + %mul = select i1 %t0, i32 %rem, i32 0 + %neg = add i32 %t1, -1 + %add = add i32 %neg, %mul + br label %if + +if: + %tobool = icmp eq i32 %t1, 0 + ret i1 %tobool +} |
