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https://github.com/c64scene-ar/llvm-6502.git
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58 lines
2.0 KiB
LLVM
58 lines
2.0 KiB
LLVM
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; RUN: llvm-as < %s | opt -tailduplicate | llc -march=x86 | grep 'je ' &&
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; RUN: llvm-as < %s | opt -tailduplicate | llc -march=x86 | not grep jmp
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; This should have no unconditional jumps in it. The C source is:
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;void foo(int c, int* P) {
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; if (c & 1) P[0] = 1;
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; if (c & 2) P[1] = 1;
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; if (c & 4) P[2] = 1;
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; if (c & 8) P[3] = 1;
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;}
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void %foo(int %c, int* %P) {
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entry:
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%tmp1 = and int %c, 1 ; <int> [#uses=1]
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%tmp1 = seteq int %tmp1, 0 ; <bool> [#uses=1]
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br bool %tmp1, label %cond_next, label %cond_true
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cond_true: ; preds = %entry
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store int 1, int* %P
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br label %cond_next
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cond_next: ; preds = %entry, %cond_true
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%tmp5 = and int %c, 2 ; <int> [#uses=1]
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%tmp5 = seteq int %tmp5, 0 ; <bool> [#uses=1]
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br bool %tmp5, label %cond_next10, label %cond_true6
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cond_true6: ; preds = %cond_next
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%tmp8 = getelementptr int* %P, int 1 ; <int*> [#uses=1]
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store int 1, int* %tmp8
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br label %cond_next10
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cond_next10: ; preds = %cond_next, %cond_true6
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%tmp13 = and int %c, 4 ; <int> [#uses=1]
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%tmp13 = seteq int %tmp13, 0 ; <bool> [#uses=1]
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br bool %tmp13, label %cond_next18, label %cond_true14
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cond_true14: ; preds = %cond_next10
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%tmp16 = getelementptr int* %P, int 2 ; <int*> [#uses=1]
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store int 1, int* %tmp16
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br label %cond_next18
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cond_next18: ; preds = %cond_next10, %cond_true14
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%tmp21 = and int %c, 8 ; <int> [#uses=1]
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%tmp21 = seteq int %tmp21, 0 ; <bool> [#uses=1]
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br bool %tmp21, label %return, label %cond_true22
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cond_true22: ; preds = %cond_next18
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%tmp24 = getelementptr int* %P, int 3 ; <int*> [#uses=1]
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store int 1, int* %tmp24
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ret void
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return: ; preds = %cond_next18
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ret void
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}
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