llvm/test/Transforms/InstCombine/pr2645-0.ll
Dan Gohman f2f6ce65b7 Change tests from "opt %s" to "opt < %s" so that opt doesn't see the
input filename so that opt doesn't print the input filename in the
output so that grep lines in the tests don't unintentionally match
strings in the input filename.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81537 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-11 18:01:28 +00:00

34 lines
1.5 KiB
LLVM

; RUN: opt < %s -instcombine -S | grep {insertelement <4 x float> undef}
; Instcombine should be able to prove that none of the
; insertelement's first operand's elements are needed.
define internal void @""(i8*) {
; <label>:1
bitcast i8* %0 to i32* ; <i32*>:2 [#uses=1]
load i32* %2, align 1 ; <i32>:3 [#uses=1]
getelementptr i8* %0, i32 4 ; <i8*>:4 [#uses=1]
bitcast i8* %4 to i32* ; <i32*>:5 [#uses=1]
load i32* %5, align 1 ; <i32>:6 [#uses=1]
br label %7
; <label>:7 ; preds = %9, %1
%.01 = phi <4 x float> [ undef, %1 ], [ %12, %9 ] ; <<4 x float>> [#uses=1]
%.0 = phi i32 [ %3, %1 ], [ %15, %9 ] ; <i32> [#uses=3]
icmp slt i32 %.0, %6 ; <i1>:8 [#uses=1]
br i1 %8, label %9, label %16
; <label>:9 ; preds = %7
sitofp i32 %.0 to float ; <float>:10 [#uses=1]
insertelement <4 x float> %.01, float %10, i32 0 ; <<4 x float>>:11 [#uses=1]
shufflevector <4 x float> %11, <4 x float> undef, <4 x i32> zeroinitializer ; <<4 x float>>:12 [#uses=2]
getelementptr i8* %0, i32 48 ; <i8*>:13 [#uses=1]
bitcast i8* %13 to <4 x float>* ; <<4 x float>*>:14 [#uses=1]
store <4 x float> %12, <4 x float>* %14, align 16
add i32 %.0, 2 ; <i32>:15 [#uses=1]
br label %7
; <label>:16 ; preds = %7
ret void
}