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50 lines
1.3 KiB
LLVM
50 lines
1.3 KiB
LLVM
; RUN: llc < %s -march=x86-64 | FileCheck %s
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; With optimization at O2 we actually get the legalized function optimized
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; away through legalization and stack coloring, but check that we do all of
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; that here and don't crash during legalization.
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; Original program:
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; typedef enum { A, B, C, D } P;
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; struct { P x[2]; } a;
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; void fn2();
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; void fn1() {
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; int b;
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; unsigned c;
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; for (;; c++) {
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; fn2();
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; unsigned n;
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; for (; c; c++) {
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; b = a.x[c] == A || a.x[c] == B || a.x[c] == D;
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; if (b) n++;
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; }
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; if (n)
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; for (;;)
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; ;
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; }
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; }
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define void @fn1() {
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; CHECK-LABEL: fn1
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; CHECK: movb $0, {{.*}}(%rsp)
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; CHECK: cmpq $8, %rax
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for.cond:
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br label %vector.body
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vector.body: ; preds = %vector.body, %for.cond
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%x42 = bitcast <4 x i4> zeroinitializer to i16
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%x43 = icmp ne i16 %x42, 0
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%x44 = select i1 %x43, i32 undef, i32 0
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%x72 = bitcast <4 x i1> zeroinitializer to i4
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%x73 = icmp ne i4 %x72, 0
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%x74 = select i1 %x73, i32 %x44, i32 undef
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%x84 = select i1 undef, i32 undef, i32 %x74
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%x88 = icmp eq i64 undef, 8
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br i1 %x88, label %middle.block, label %vector.body
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middle.block: ; preds = %vector.body
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%0 = select i1 undef, i32 undef, i32 %x84
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ret void
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}
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