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llvm-mirror/test/Transforms/InstCombine/2007-03-25-BadShiftMask.ll
Dan Gohman 205b641954 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.

llvm-svn: 81537
2009-09-11 18:01:28 +00:00

30 lines
1.0 KiB
LLVM

; PR1271
; RUN: opt < %s -instcombine -S | \
; RUN: grep {icmp eq i32 .tmp.*, 2146435072}
%struct..0anon = type { i32, i32 }
%struct..1anon = type { double }
define i32 @main() {
entry:
%u = alloca %struct..1anon, align 8 ; <%struct..1anon*> [#uses=4]
%tmp1 = getelementptr %struct..1anon* %u, i32 0, i32 0 ; <double*> [#uses=1]
store double 0x7FF0000000000000, double* %tmp1
%tmp3 = getelementptr %struct..1anon* %u, i32 0, i32 0 ; <double*> [#uses=1]
%tmp34 = bitcast double* %tmp3 to %struct..0anon* ; <%struct..0anon*> [#uses=1]
%tmp5 = getelementptr %struct..0anon* %tmp34, i32 0, i32 1 ; <i32*> [#uses=1]
%tmp6 = load i32* %tmp5 ; <i32> [#uses=1]
%tmp7 = shl i32 %tmp6, 1 ; <i32> [#uses=1]
%tmp8 = lshr i32 %tmp7, 21 ; <i32> [#uses=1]
%tmp89 = trunc i32 %tmp8 to i16 ; <i16> [#uses=1]
icmp ne i16 %tmp89, 2047 ; <i1>:0 [#uses=1]
zext i1 %0 to i8 ; <i8>:1 [#uses=1]
icmp ne i8 %1, 0 ; <i1>:2 [#uses=1]
br i1 %2, label %cond_true, label %cond_false
cond_true: ; preds = %entry
ret i32 0
cond_false: ; preds = %entry
ret i32 1
}