| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -O2 -S < %s | FileCheck %s |
| ; RUN: opt -instcombine -S < %s | FileCheck %s --check-prefix=IC |
| ; RUN: opt -aggressive-instcombine -instcombine -S < %s | FileCheck %s --check-prefix=AIC_AND_IC |
| |
| target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| define i16 @foo(i1 %a) { |
| ; CHECK-LABEL: @foo( |
| ; CHECK-NEXT: [[TRUNC:%.*]] = select i1 [[A:%.*]], i16 32767, i16 0 |
| ; CHECK-NEXT: ret i16 [[TRUNC]] |
| ; |
| ; IC-LABEL: @foo( |
| ; IC-NEXT: [[TRUNC:%.*]] = select i1 [[A:%.*]], i16 32767, i16 0 |
| ; IC-NEXT: ret i16 [[TRUNC]] |
| ; |
| ; AIC_AND_IC-LABEL: @foo( |
| ; AIC_AND_IC-NEXT: [[LSHR:%.*]] = select i1 [[A:%.*]], i16 32767, i16 0 |
| ; AIC_AND_IC-NEXT: ret i16 [[LSHR]] |
| ; |
| %sext = sext i1 %a to i16 |
| %zext = zext i16 %sext to i32 |
| %lshr = lshr i32 %zext, 1 |
| %trunc = trunc i32 %lshr to i16 |
| ret i16 %trunc |
| } |
| |
| define i16 @foo2(i1 %a) { |
| ; CHECK-LABEL: @foo2( |
| ; CHECK-NEXT: [[LSHR:%.*]] = select i1 [[A:%.*]], i16 32767, i16 0 |
| ; CHECK-NEXT: ret i16 [[LSHR]] |
| ; |
| ; IC-LABEL: @foo2( |
| ; IC-NEXT: [[LSHR:%.*]] = select i1 [[A:%.*]], i16 32767, i16 0 |
| ; IC-NEXT: ret i16 [[LSHR]] |
| ; |
| ; AIC_AND_IC-LABEL: @foo2( |
| ; AIC_AND_IC-NEXT: [[LSHR:%.*]] = select i1 [[A:%.*]], i16 32767, i16 0 |
| ; AIC_AND_IC-NEXT: ret i16 [[LSHR]] |
| ; |
| %s = sext i1 %a to i16 |
| %lshr = lshr i16 %s, 1 |
| ret i16 %lshr |
| } |