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; RUN: llc -march=x86 %s -o -
; RUN: llc -march=x86-64 %s -o -
; PR6497
; Chain and flag folding issues.
define i32 @test1() nounwind ssp {
entry:
%tmp5.i = volatile load i32* undef ; <i32> [#uses=1]
%conv.i = zext i32 %tmp5.i to i64 ; <i64> [#uses=1]
%tmp12.i = volatile load i32* undef ; <i32> [#uses=1]
%conv13.i = zext i32 %tmp12.i to i64 ; <i64> [#uses=1]
%shl.i = shl i64 %conv13.i, 32 ; <i64> [#uses=1]
%or.i = or i64 %shl.i, %conv.i ; <i64> [#uses=1]
%add16.i = add i64 %or.i, 256 ; <i64> [#uses=1]
%shr.i = lshr i64 %add16.i, 8 ; <i64> [#uses=1]
%conv19.i = trunc i64 %shr.i to i32 ; <i32> [#uses=1]
volatile store i32 %conv19.i, i32* undef
ret i32 undef
}
; PR6533
define void @test2(i1 %x, i32 %y) nounwind {
%land.ext = zext i1 %x to i32 ; <i32> [#uses=1]
%and = and i32 %y, 1 ; <i32> [#uses=1]
%xor = xor i32 %and, %land.ext ; <i32> [#uses=1]
%cmp = icmp eq i32 %xor, 1 ; <i1> [#uses=1]
br i1 %cmp, label %if.end, label %if.then
if.then: ; preds = %land.end
ret void
if.end: ; preds = %land.end
ret void
}
; PR6577
%pair = type { i64, double }
define void @test3() {
dependentGraph243.exit:
%subject19 = load %pair* undef ; <%1> [#uses=1]
%0 = extractvalue %pair %subject19, 1 ; <double> [#uses=2]
%1 = select i1 undef, double %0, double undef ; <double> [#uses=1]
%2 = select i1 undef, double %1, double %0 ; <double> [#uses=1]
%3 = insertvalue %pair undef, double %2, 1 ; <%1> [#uses=1]
store %pair %3, %pair* undef
ret void
}
; PR6605
define i64 @test4(i8* %P) nounwind ssp {
entry:
%tmp1 = load i8* %P ; <i8> [#uses=3]
%tobool = icmp eq i8 %tmp1, 0 ; <i1> [#uses=1]
%tmp58 = sext i1 %tobool to i8 ; <i8> [#uses=1]
%mul.i = and i8 %tmp58, %tmp1 ; <i8> [#uses=1]
%conv6 = zext i8 %mul.i to i32 ; <i32> [#uses=1]
%cmp = icmp ne i8 %tmp1, 1 ; <i1> [#uses=1]
%conv11 = zext i1 %cmp to i32 ; <i32> [#uses=1]
%call12 = tail call i32 @safe(i32 %conv11) nounwind ; <i32> [#uses=1]
%and = and i32 %conv6, %call12 ; <i32> [#uses=1]
%tobool13 = icmp eq i32 %and, 0 ; <i1> [#uses=1]
br i1 %tobool13, label %if.else, label %return
if.else: ; preds = %entry
br label %return
return: ; preds = %if.else, %entry
ret i64 undef
}
declare i32 @safe(i32)
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