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b6bfedbcfd
an RFP register class. Teach ScheduleDAG how to handle CopyToReg with different src/dst reg classes. This allows us to compile trivial inline asms that expect stuff on the top of x87-fp stack. llvm-svn: 48107
30 lines
753 B
LLVM
30 lines
753 B
LLVM
; RUN: llvm-as < %s | llc -march=x86
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define x86_fp80 @test1() {
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%tmp85 = call x86_fp80 asm sideeffect "fld0", "={st(0)}"()
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ret x86_fp80 %tmp85
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}
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define double @test2() {
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%tmp85 = call double asm sideeffect "fld0", "={st(0)}"()
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ret double %tmp85
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}
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define void @test3(x86_fp80 %X) {
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call void asm sideeffect "frob ", "{st(0)},~{dirflag},~{fpsr},~{flags}"( x86_fp80 %X)
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ret void
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}
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define void @test4(double %X) {
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call void asm sideeffect "frob ", "{st(0)},~{dirflag},~{fpsr},~{flags}"( double %X)
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ret void
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}
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define void @test5(double %X) {
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%Y = add double %X, 123.0
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call void asm sideeffect "frob ", "{st(0)},~{dirflag},~{fpsr},~{flags}"( double %Y)
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ret void
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}
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