llvm-6502/test/CodeGen/X86/fp-fast.ll
Owen Anderson 36a398fe70 Semantically revert r236031, which is not a good idea for in-order targets.
At the least it should be guarded by some kind of target hook.
It also introduced catastrophic compile time and code quality
regressions on some out of tree targets (test case still being
reduced/sanitized).

Sanjay agreed with reverting this patch until these issues can be
resolved.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@236199 91177308-0d34-0410-b5e6-96231b3b80d8
2015-04-30 04:06:32 +00:00

117 lines
2.5 KiB
LLVM

; RUN: llc -mtriple=x86_64-unknown-unknown -mattr=avx -enable-unsafe-fp-math < %s | FileCheck %s
define float @test1(float %a) {
; CHECK-LABEL: test1:
; CHECK: # BB#0:
; CHECK-NEXT: vmulss {{.*}}(%rip), %xmm0, %xmm0
; CHECK-NEXT: retq
%t1 = fadd float %a, %a
%r = fadd float %t1, %t1
ret float %r
}
define float @test2(float %a) {
; CHECK-LABEL: test2:
; CHECK: # BB#0:
; CHECK-NEXT: vmulss {{.*}}(%rip), %xmm0, %xmm0
; CHECK-NEXT: retq
%t1 = fmul float 4.0, %a
%t2 = fadd float %a, %a
%r = fadd float %t1, %t2
ret float %r
}
define float @test3(float %a) {
; CHECK-LABEL: test3:
; CHECK: # BB#0:
; CHECK-NEXT: vmulss {{.*}}(%rip), %xmm0, %xmm0
; CHECK-NEXT: retq
%t1 = fmul float %a, 4.0
%t2 = fadd float %a, %a
%r = fadd float %t1, %t2
ret float %r
}
define float @test4(float %a) {
; CHECK-LABEL: test4:
; CHECK: # BB#0:
; CHECK-NEXT: vmulss {{.*}}(%rip), %xmm0, %xmm0
; CHECK-NEXT: retq
%t1 = fadd float %a, %a
%t2 = fmul float 4.0, %a
%r = fadd float %t1, %t2
ret float %r
}
define float @test5(float %a) {
; CHECK-LABEL: test5:
; CHECK: # BB#0:
; CHECK-NEXT: vmulss {{.*}}(%rip), %xmm0, %xmm0
; CHECK-NEXT: retq
%t1 = fadd float %a, %a
%t2 = fmul float %a, 4.0
%r = fadd float %t1, %t2
ret float %r
}
define float @test6(float %a) {
; CHECK-LABEL: test6:
; CHECK: # BB#0:
; CHECK-NEXT: vxorps %xmm0, %xmm0, %xmm0
; CHECK-NEXT: retq
%t1 = fmul float 2.0, %a
%t2 = fadd float %a, %a
%r = fsub float %t1, %t2
ret float %r
}
define float @test7(float %a) {
; CHECK-LABEL: test7:
; CHECK: # BB#0:
; CHECK-NEXT: vxorps %xmm0, %xmm0, %xmm0
; CHECK-NEXT: retq
%t1 = fmul float %a, 2.0
%t2 = fadd float %a, %a
%r = fsub float %t1, %t2
ret float %r
}
define float @test8(float %a) {
; CHECK-LABEL: test8:
; CHECK: # BB#0:
; CHECK-NEXT: retq
%t1 = fmul float %a, 0.0
%t2 = fadd float %a, %t1
ret float %t2
}
define float @test9(float %a) {
; CHECK-LABEL: test9:
; CHECK: # BB#0:
; CHECK-NEXT: retq
%t1 = fmul float 0.0, %a
%t2 = fadd float %t1, %a
ret float %t2
}
define float @test10(float %a) {
; CHECK-LABEL: test10:
; CHECK: # BB#0:
; CHECK-NEXT: vxorps %xmm0, %xmm0, %xmm0
; CHECK-NEXT: retq
%t1 = fsub float -0.0, %a
%t2 = fadd float %a, %t1
ret float %t2
}
define float @test11(float %a) {
; CHECK-LABEL: test11:
; CHECK: # BB#0:
; CHECK-NEXT: vxorps %xmm0, %xmm0, %xmm0
; CHECK-NEXT: retq
%t1 = fsub float -0.0, %a
%t2 = fadd float %a, %t1
ret float %t2
}