42 lines
969 B
LLVM
42 lines
969 B
LLVM
; RUN: llc -verify-machineinstrs -mtriple=powerpc64le-unknown-linux-gnu < %s | FileCheck %s
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; RUN: llc -verify-machineinstrs -mtriple=powerpc64-unknown-linux-gnu < %s | FileCheck %s
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; Make sure that the subfic is generated iff possible
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define i64 @subtract_from_imm1(i64 %v) nounwind readnone {
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entry:
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; CHECK-LABEL: subtract_from_imm1
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; CHECK: subfic 3, 3, 32767
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; CHECK: blr
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%sub = sub i64 32767, %v
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ret i64 %sub
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}
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define i64 @subtract_from_imm2(i64 %v) nounwind readnone {
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entry:
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; CHECK-LABEL: subtract_from_imm2
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; CHECK-NOT: subfic
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; CHECK: blr
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%sub = sub i64 32768, %v
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ret i64 %sub
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}
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define i64 @subtract_from_imm3(i64 %v) nounwind readnone {
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entry:
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; CHECK-LABEL: subtract_from_imm3
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; CHECK: subfic 3, 3, -32768
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; CHECK: blr
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%sub = sub i64 -32768, %v
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ret i64 %sub
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}
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define i64 @subtract_from_imm4(i64 %v) nounwind readnone {
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entry:
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; CHECK-LABEL: subtract_from_imm4
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; CHECK-NOT: subfic
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; CHECK: blr
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%sub = sub i64 -32769, %v
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ret i64 %sub
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}
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