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484f10138e
This pass attempts to fold the source operands of mov and copy instructions into their uses. llvm-svn: 222581
41 lines
948 B
LLVM
41 lines
948 B
LLVM
; RUN: llc < %s -march=r600 -mcpu=SI -verify-machineinstrs | FileCheck %s
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; CHECK-LABEL: {{^}}fold_sgpr:
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; CHECK: v_add_i32_e32 v{{[0-9]+}}, s
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define void @fold_sgpr(i32 addrspace(1)* %out, i32 %fold) {
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entry:
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%tmp0 = icmp ne i32 %fold, 0
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br i1 %tmp0, label %if, label %endif
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if:
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%id = call i32 @llvm.r600.read.tidig.x()
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%offset = add i32 %fold, %id
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%tmp1 = getelementptr i32 addrspace(1)* %out, i32 %offset
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store i32 0, i32 addrspace(1)* %tmp1
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br label %endif
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endif:
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ret void
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}
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; CHECK-LABEL: {{^}}fold_imm:
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; CHECK v_or_i32_e32 v{{[0-9]+}}, 5
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define void @fold_imm(i32 addrspace(1)* %out, i32 %cmp) {
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entry:
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%fold = add i32 3, 2
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%tmp0 = icmp ne i32 %cmp, 0
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br i1 %tmp0, label %if, label %endif
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if:
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%id = call i32 @llvm.r600.read.tidig.x()
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%val = or i32 %id, %fold
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store i32 %val, i32 addrspace(1)* %out
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br label %endif
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endif:
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ret void
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}
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declare i32 @llvm.r600.read.tidig.x() #0
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attributes #0 = { readnone }
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