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llvm-mirror/test/CodeGen/Mips/fabs.ll
Akira Hatanaka 11a442d515 Emit abs.s or abs.d only if -enable-no-nans-fp-math is supplied by user.
Invalid operation is signaled if the operand of these instructions is NaN.

llvm-svn: 154545
2012-04-11 22:49:04 +00:00

53 lines
1.6 KiB
LLVM

; RUN: llc < %s -march=mipsel -mcpu=mips32 | FileCheck %s -check-prefix=32
; RUN: llc < %s -march=mipsel -mcpu=mips32r2 | FileCheck %s -check-prefix=32R2
; RUN: llc < %s -march=mips64el -mcpu=mips64 -mattr=n64 | FileCheck %s -check-prefix=64
; RUN: llc < %s -march=mips64el -mcpu=mips64r2 -mattr=n64 | FileCheck %s -check-prefix=64R2
; RUN: llc < %s -march=mipsel -mcpu=mips32 -enable-no-nans-fp-math | FileCheck %s -check-prefix=NO-NAN
define float @foo0(float %a) nounwind readnone {
entry:
; 32: lui $[[T0:[0-9]+]], 32767
; 32: ori $[[MSK0:[0-9]+]], $[[T0]], 65535
; 32: and $[[AND:[0-9]+]], ${{[0-9]+}}, $[[MSK0]]
; 32: mtc1 $[[AND]], $f0
; 32R2: ins $[[INS:[0-9]+]], $zero, 31, 1
; 32R2: mtc1 $[[INS]], $f0
; NO-NAN: abs.s
%call = tail call float @fabsf(float %a) nounwind readnone
ret float %call
}
declare float @fabsf(float) nounwind readnone
define double @foo1(double %a) nounwind readnone {
entry:
; 32: lui $[[T0:[0-9]+]], 32767
; 32: ori $[[MSK0:[0-9]+]], $[[T0]], 65535
; 32: and $[[AND:[0-9]+]], ${{[0-9]+}}, $[[MSK0]]
; 32: mtc1 $[[AND]], $f1
; 32R2: ins $[[INS:[0-9]+]], $zero, 31, 1
; 32R2: mtc1 $[[INS]], $f1
; 64: daddiu $[[T0:[0-9]+]], $zero, 1
; 64: dsll $[[T1:[0-9]+]], ${{[0-9]+}}, 63
; 64: daddiu $[[MSK0:[0-9]+]], $[[T1]], -1
; 64: and $[[AND:[0-9]+]], ${{[0-9]+}}, $[[MSK0]]
; 64: dmtc1 $[[AND]], $f0
; 64R2: dins $[[INS:[0-9]+]], $zero, 63, 1
; 64R2: dmtc1 $[[INS]], $f0
; NO-NAN: abs.d
%call = tail call double @fabs(double %a) nounwind readnone
ret double %call
}
declare double @fabs(double) nounwind readnone