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https://github.com/c64scene-ar/llvm-6502.git
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dcb0422f25
in constant islands for Mips16. We introdcuce JalB16 as a synomnym for Jal16. It makes it easier to read and is also necessary because Jal16 is a call instruction but JalB16 is being used as a branch. Various parts of LLVM will not work properly even in this late stage of the backend if we use what was declared as a call instruction to function as a branch. For one, basic block labels may not get emitted in some situations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@195968 91177308-0d34-0410-b5e6-96231b3b80d8
60 lines
1.9 KiB
LLVM
60 lines
1.9 KiB
LLVM
; RUN: llc -mtriple=mipsel-linux-gnu -march=mipsel -mcpu=mips16 -soft-float -mips16-hard-float -relocation-model=static -O0 < %s | FileCheck %s -check-prefix=lcb
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@i = global i32 0, align 4
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@j = common global i32 0, align 4
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@k = common global i32 0, align 4
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; Function Attrs: nounwind
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define i32 @s() #0 {
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entry:
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%0 = load i32* @i, align 4
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%cmp = icmp eq i32 %0, 0
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br i1 %cmp, label %if.then, label %if.else
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if.then: ; preds = %entry
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store i32 0, i32* @i, align 4
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call void asm sideeffect ".space 1000", ""() #1, !srcloc !1
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br label %if.end
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if.else: ; preds = %entry
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store i32 1, i32* @i, align 4
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br label %if.end
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if.end: ; preds = %if.else, %if.then
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ret i32 0
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; lcb: bnez $2, $BB0_2
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; lcb: b $BB0_1 # 16 bit inst
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; lcb: $BB0_1: # %if.then
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}
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; Function Attrs: nounwind
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define i32 @b() #0 {
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entry:
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%0 = load i32* @i, align 4
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%cmp = icmp eq i32 %0, 0
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br i1 %cmp, label %if.then, label %if.else
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if.then: ; preds = %entry
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store i32 0, i32* @i, align 4
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call void asm sideeffect ".space 1000000", ""() #1, !srcloc !2
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br label %if.end
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if.else: ; preds = %entry
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store i32 1, i32* @i, align 4
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br label %if.end
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if.end: ; preds = %if.else, %if.then
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ret i32 0
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}
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; lcb: beqz $2, $BB1_1 # 16 bit inst
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; lcb: jal $BB1_2 # branch
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; lcb: $BB1_1: # %if.then
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attributes #0 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind }
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!1 = metadata !{i32 65}
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!2 = metadata !{i32 167}
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