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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 = load volatile i32* undef ; <i32> [#uses=1]
%conv.i = zext i32 %tmp5.i to i64 ; <i64> [#uses=1]
%tmp12.i = load volatile 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]
store volatile 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)
; PR6607
define fastcc void @test5(i32 %FUNC) nounwind {
foo:
%0 = load i8* undef, align 1 ; <i8> [#uses=3]
%1 = sext i8 %0 to i32 ; <i32> [#uses=2]
%2 = zext i8 %0 to i32 ; <i32> [#uses=1]
%tmp1.i5037 = urem i32 %2, 10 ; <i32> [#uses=1]
%tmp.i5038 = icmp ugt i32 %tmp1.i5037, 15 ; <i1> [#uses=1]
%3 = zext i1 %tmp.i5038 to i8 ; <i8> [#uses=1]
%4 = icmp slt i8 %0, %3 ; <i1> [#uses=1]
%5 = add nsw i32 %1, 256 ; <i32> [#uses=1]
%storemerge.i.i57 = select i1 %4, i32 %5, i32 %1 ; <i32> [#uses=1]
%6 = shl i32 %storemerge.i.i57, 16 ; <i32> [#uses=1]
%7 = sdiv i32 %6, -256 ; <i32> [#uses=1]
%8 = trunc i32 %7 to i8 ; <i8> [#uses=1]
store i8 %8, i8* undef, align 1
ret void
}
; Crash commoning identical asms.
; PR6803
define void @test6(i1 %C) nounwind optsize ssp {
entry:
br i1 %C, label %do.body55, label %do.body92
do.body55: ; preds = %if.else36
call void asm sideeffect "foo", "~{dirflag},~{fpsr},~{flags}"() nounwind, !srcloc !0
ret void
do.body92: ; preds = %if.then66
call void asm sideeffect "foo", "~{dirflag},~{fpsr},~{flags}"() nounwind, !srcloc !1
ret void
}
!0 = metadata !{i32 633550}
!1 = metadata !{i32 634261}
; Crash during XOR optimization.
; <rdar://problem/7869290>
define void @test7() nounwind ssp {
entry:
br i1 undef, label %bb14, label %bb67
bb14:
%tmp0 = trunc i16 undef to i1
%tmp1 = load i8* undef, align 8
%tmp2 = shl i8 %tmp1, 4
%tmp3 = lshr i8 %tmp2, 7
%tmp4 = trunc i8 %tmp3 to i1
%tmp5 = icmp ne i1 %tmp0, %tmp4
br i1 %tmp5, label %bb14, label %bb67
bb67:
ret void
}
; Crash when trying to copy AH to AL.
; PR7540
define void @copy8bitregs() nounwind {
entry:
%div.i = sdiv i32 115200, 0
%shr8.i = lshr i32 %div.i, 8
%conv4.i = trunc i32 %shr8.i to i8
call void asm sideeffect "outb $0, ${1:w}", "{ax},N{dx},~{dirflag},~{fpsr},~{flags}"(i8 %conv4.i, i32 1017) nounwind
unreachable
}
; Crash trying to form conditional increment with fp value.
; PR8981
define i32 @test9(double %X) ssp align 2 {
entry:
%0 = fcmp one double %X, 0.000000e+00
%cond = select i1 %0, i32 1, i32 2
ret i32 %cond
}
; PR8514 - Crash in match address do to "heroics" turning and-of-shift into
; shift of and.
%struct.S0 = type { i8, [2 x i8], i8 }
define void @func_59(i32 %p_63) noreturn nounwind {
entry:
br label %for.body
for.body: ; preds = %for.inc44, %entry
%p_63.addr.1 = phi i32 [ %p_63, %entry ], [ 0, %for.inc44 ]
%l_74.0 = phi i32 [ 0, %entry ], [ %add46, %for.inc44 ]
br i1 undef, label %for.inc44, label %bb.nph81
bb.nph81: ; preds = %for.body
%tmp98 = add i32 %p_63.addr.1, 0
br label %for.body22
for.body22: ; preds = %for.body22, %bb.nph81
%l_75.077 = phi i64 [ %ins, %for.body22 ], [ undef, %bb.nph81 ]
%tmp110 = trunc i64 %l_75.077 to i32
%tmp111 = and i32 %tmp110, 65535
%arrayidx32.0 = getelementptr [9 x [5 x [2 x %struct.S0]]]* undef, i32 0, i32 %l_74.0, i32
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