; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; REQUIRES: asserts
; RUN: llc < %s -mtriple=powerpc64le -debug-only=isel -o /dev/null 2>&1 | FileCheck %s --check-prefix=FMFDEBUG
; RUN: llc < %s -mtriple=powerpc64le | FileCheck %s --check-prefix=FMF
; RUN: llc < %s -mtriple=powerpc64le -debug-only=isel -o /dev/null 2>&1 -enable-unsafe-fp-math -enable-no-nans-fp-math | FileCheck %s --check-prefix=GLOBALDEBUG
; RUN: llc < %s -mtriple=powerpc64le -enable-unsafe-fp-math -enable-no-nans-fp-math -enable-no-signed-zeros-fp-math | FileCheck %s --check-prefix=GLOBAL
; Test FP transforms using instruction/node-level fast-math-flags.
; We're also checking debug output to verify that FMF is propagated to the newly created nodes.
; The run with the global unsafe param tests the pre-FMF behavior using regular instructions/nodes.
declare float @llvm.fma.f32(float, float, float)
declare float @llvm.sqrt.f32(float)
; X * Y + Z --> fma(X, Y, Z)
; contract bits in fmul is checked.
; FMFDEBUG-LABEL: Optimized lowered selection DAG: %bb.0 'fmul_fadd_contract1:'
; FMFDEBUG-NOT: fma contract {{t[0-9]+}}, {{t[0-9]+}}, {{t[0-9]+}}
; FMFDEBUG: Type-legalized selection DAG: %bb.0 'fmul_fadd_contract1:'
define float @fmul_fadd_contract1(float %x, float %y, float %z) {
; FMF-LABEL: fmul_fadd_contract1:
; FMF: # %bb.0:
; FMF-NEXT: xsmulsp 0, 1, 2
; FMF-NEXT: xsaddsp 1, 0, 3
; FMF-NEXT: blr
;
; GLOBAL-LABEL: fmul_fadd_contract1:
; GLOBAL: # %bb.0:
; GLOBAL-NEXT: xsmaddasp 3, 1, 2
; GLOBAL-NEXT: fmr 1, 3
; GLOBAL-NEXT: blr
%mul = fmul float %x, %y
%add = fadd contract float %mul, %z
ret float %add
}
; contract bits in fadd is also checked.
; FMFDEBUG-LABEL: Optimized lowered selection DAG: %bb.0 'fmul_fadd_contract2:'
; FMFDEBUG-NOT: fma contract {{t[0-9]+}}, {{t[0-9]+}}, {{t[0-9]+}}
; FMFDEBUG: Type-legalized selection DAG: %bb.0 'fmul_fadd_contract2:'
define float @fmul_fadd_contract2(float %x, float %y, float %z) {
; FMF-LABEL: fmul_fadd_contract2:
; FMF: # %bb.0:
; FMF-NEXT: xsmulsp 0, 1, 2
; FMF-NEXT: xsaddsp 1, 0, 3
; FMF-NEXT: blr
;
; GLOBAL-LABEL: fmul_fadd_contract2:
; GLOBAL: # %bb.0:
; GLOBAL-NEXT: xsmaddasp 3, 1, 2
; GLOBAL-NEXT: fmr 1, 3
; GLOBAL-NEXT: blr
%mul = fmul contract float %x, %y
%add = fadd float %mul, %z
ret float %add
}
; FMFDEBUG-LABEL: Optimized lowered selection DAG: %bb.0 'fmul_fadd_contract3:'
; FMFDEBUG: fma contract {{t[0-9]+}}, {{t[0-9]+}}, {{t[0-9]+}}
; FMFDEBUG: Type-legalized selection DAG: %bb.0 'fmul_fadd_contract3:'
define float @fmul_fadd_contract3(float %x, float %y, float %z) {
; FMF-LABEL: fmul_fadd_contract3:
; FMF: # %bb.0:
; FMF-NEXT: xsmaddasp 3, 1, 2
; FMF-NEXT: fmr 1, 3
; FMF-NEXT: blr
;
; GLOBAL-LABEL: fmul_fadd_contract3:
; GLOBAL: # %bb.0:
; GLOBAL-NEXT: xsmaddasp 3, 1, 2
; GLOBAL-NEXT: fmr 1, 3
; GLOBAL-NEXT: blr
%mul = fmul contract float %x, %y
%add = fadd contract float %mul, %z
ret float %add
}
; Reassociation does NOT imply that FMA contraction is allowed.
; FMFDEBUG-LABEL: Optimized lowered selection DAG: %bb.0 'fmul_fadd_reassoc1:'
; FMFDEBUG-NOT: fma reassoc {{t[0-9]+}}, {{t[0-9]+}}, {{t[0-9]+}}
; FMFDEBUG: Type-legalized selection DAG: %bb.0 'fmul_fadd_reassoc1:'
define float @fmul_fadd_reassoc1(float %x, float %y, float %z) {
; FMF-LABEL: fmul_fadd_reassoc1:
; FMF: # %bb.0:
; FMF-NEXT: xsmulsp 0, 1, 2
; FMF-NEXT: xsaddsp 1, 0, 3
; FMF-NEXT: blr
;
; GLOBAL-LABEL: fmul_fadd_reassoc1:
; GLOBAL: # %bb.0:
; GLOBAL-NEXT: xsmaddasp 3, 1, 2
; GLOBAL-NEXT: fmr 1, 3
; GLOBAL-NEXT: blr
%mul = fmul float %x, %y
%add = fadd reassoc float %mul, %z
ret float %add
}
; This shouldn't change anything - the intermediate fmul result is now also flagged.
; FMFDEBUG-LABEL: Optimized lowered selection DAG: %bb.0 'fmul_fadd_reassoc2:'
; FMFDEBUG-NOT: fma reassoc {{t[0-9]+}}, {{t[0-9]+}}
; FMFDEBUG: Type-legalized selection DAG: %bb.0 'fmul_fadd_reassoc2:'
define float @fmul_fadd_reassoc2(float %x, float %y, float %z) {
; FMF-LABEL: fmul_fadd_reassoc2:
; FMF: # %bb.0:
; FMF-NEXT: xsmulsp 0, 1, 2
; FMF-NEXT: xsaddsp 1, 0, 3
; FMF-NEXT: blr
;
; GLOBAL-LABEL: fmul_fadd_reassoc2:
; GLOBAL: # %bb.0:
; GLOBAL-NEXT: xsmaddasp 3, 1, 2
; GLOBAL-NEXT: fmr 1, 3
; GLOBAL-NEXT: blr
%mul = fmul reassoc float %x, %y
%add = fadd reassoc float %mul, %z
ret float %add
}
; The fadd is now fully 'fast', but fmul is not yet.
; FMFDEBUG-LABEL: Optimized lowered selection DAG: %bb.0 'fmul_fadd_fast1:'
; FMFDEBUG-NOT: fma nnan ninf nsz arcp contract afn reassoc {{t[0-9]+}}, {{t[0-9]+}}, {{t[0-9]+}}
; FMFDEBUG: Type-legalized selection DAG: %bb.0 'fmul_fadd_fast1:'
define float @fmul_fadd_fast1(float %x, float %y, float %z) {
; FMF-LABEL: fmul_fadd_fast1:
; FMF: # %bb.0:
; FMF-NEXT: xsmulsp 0, 1, 2
; FMF-NEXT: xsaddsp 1, 0, 3
; FMF-NEXT: blr
;
; GLOBAL-LABEL: fmul_fadd_fast1:
; GLOBAL: # %bb.0:
; GLOBAL-NEXT: xsmaddasp 3, 1, 2
; GLOBAL-NEXT: fmr 1, 3
; GLOBAL-NEXT: blr
%mul = fmul float %x, %y
%add = fadd fast float %mul, %z
ret float %add
}
; This implies that contraction is allowed - the intermediate fmul result is now also flagged.
; FMFDEBUG-LABEL: Optimized lowered selection DAG: %bb.0 'fmul_fadd_fast2:'
; FMFDEBUG: fma nnan ninf nsz arcp contract afn reassoc {{t[0-9]+}}, {{t[0-9]+}}, {{t[0-9]+}}
; FMFDEBUG: Type-legalized selection DAG: %bb.0 'fmul_fadd_fast2:'
define float @fmul_fadd_fast2(float %x, float %y, float %z) {
; FMF-LABEL: fmul_fadd_fast2:
; FMF: # %bb.0:
; FMF-NEXT: xsmaddasp 3, 1, 2
; FMF-NEXT: fmr 1, 3
; FMF-NEXT: blr
;
; GLOBAL-LABEL: fmul_fadd_fast2:
; GLOBAL: # %bb.0:
; GLOBAL-NEXT: xsmaddasp 3, 1, 2
; GLOBAL-NEXT: fmr 1, 3
; GLOBAL-NEXT: blr
%mul = fmul fast float %x, %y
%add = fadd fast float %mul, %z
ret float %add
}
; fma(X, 7.0, X * 42.0) --> X * 49.0
; This is the minimum FMF needed for this transform - the FMA allows reassociation.
; FMFDEBUG-LABEL: Optimized lowered selection DAG: %bb.0 'fmul_fma_reassoc1:'
; FMFDEBUG: fmul reassoc {{t[0-9]+}},
; FMFDEBUG: Type-legalized selection DAG: %bb.0 'fmul_fma_reassoc1:'
; GLOBALDEBUG-LABEL: Optimized lowered selection DAG: %bb.0 'fmul_fma_reassoc1:'
; GLOBALDEBUG: fmul reassoc {{t[0-9]+}}
; GLOBALDEBUG: Type-legalized selection DAG: %bb.0 'fmul_fma_reassoc1:'
define float @fmul_fma_reassoc1(float %x) {
; FMF-LABEL: fmul_fma_reassoc1:
; FMF: # %bb.0:
; FMF-NEXT: addis 3, 2, .LCPI7_0@toc@ha
; FMF-NEXT: lfs 0, .LCPI7_0@toc@l(3)
; FMF-NEXT: xsmulsp 1, 1, 0
; FMF-NEXT: blr
;
; GLOBAL-LABEL: fmul_fma_reassoc1:
; GLOBAL: # %bb.0:
; GLOBAL-NEXT: addis 3, 2, .LCPI7_0@toc@ha
; GLOBAL-NEXT: lfs 0, .LCPI7_0@toc@l(3)
; GLOBAL-NEXT: xsmulsp 1, 1, 0
; GLOBAL-NEXT: blr
%mul = fmul float %x, 42.0
%fma = call reassoc float @llvm.fma.f32(float %x, float 7.0, float %mul)
ret float %fma
}
; This shouldn't change anything - the intermediate fmul result is now also flagged.
; FMFDEBUG-LABEL: Optimized lowered selection DAG: %bb.0 'fmul_fma_reassoc2:'
; FMFDEBUG: fmul reassoc {{t[0-9]+}}
; FMFDEBUG: Type-legalized selection DAG: %bb.0 'fmul_fma_reassoc2:'
; GLOBALDEBUG-LABEL: Optimized lowered selection DAG: %bb.0 'fmul_fma_reassoc2:'
; GLOBALDEBUG: fmul reassoc {{t[0-9]+}}
; GLOBALDEBUG: Type-legalized selection DAG: %bb.0 'fmul_fma_reassoc2:'
define float @fmul_fma_reassoc2(float %x) {
; FMF-LABEL: fmul_fma_reassoc2:
; FMF: # %bb.0:
; FMF-NEXT: addis 3, 2, .LCPI8_0@toc@ha
; FMF-NEXT: lfs 0, .LCPI8_0@toc@l(3)
; FMF-NEXT: xsmulsp 1, 1, 0
; FMF-NEXT: blr
;
; GLOBAL-LABEL: fmul_fma_reassoc2:
; GLOBAL: # %bb.0:
; GLOBAL-NEXT: addis 3, 2, .LCPI8_0@toc@ha
; GLOBAL-NEXT: lfs 0, .LCPI8_0@toc@l(3)
; GLOBAL-NEXT: xsmulsp 1, 1, 0
; GLOBAL-NEXT: blr
%mul = fmul reassoc float %x, 42.0
%fma = call reassoc float @llvm.fma.f32(float %x, float 7.0, float %mul)
ret float %fma
}
; The FMA is now fully 'fast'. This implies that reassociation is allowed.
; FMFDEBUG-LABEL: Optimized lowered selection DAG: %bb.0 'fmul_fma_fast1:'
; FMFDEBUG: fmul nnan ninf nsz arcp contract afn reassoc {{t[0-9]+}}
; FMFDEBUG: Type-legalized selection DAG: %bb.0 'fmul_fma_fast1:'
; GLOBALDEBUG-LABEL: Optimized lowered selection DAG: %bb.0 'fmul_fma_fast1:'
; GLOBALDEBUG: fmul nnan ninf nsz arcp contract afn reassoc {{t[0-9]+}}
; GLOBALDEBUG: Type-legalized selection DAG: %bb.0 'fmul_fma_fast1:'
define float @fmul_fma_fast1(float %x) {
; FMF-LABEL: fmul_fma_fast1:
; FMF: # %bb.0:
; FMF-NEXT: addis 3, 2, .LCPI9_0@toc@ha
; FMF-NEXT: lfs 0, .LCPI9_0@toc@l(3)
; FMF-NEXT: xsmulsp 1, 1, 0
; FMF-NEXT: blr
;
; GLOBAL-LABEL: fmul_fma_fast1:
; GLOBAL: # %bb.0:
; GLOBAL-NEXT: addis 3, 2, .LCPI9_0@toc@ha
; GLOBAL-NEXT: lfs 0, .LCPI9_0@toc@l(3)
; GLOBAL-NEXT: xsmulsp 1, 1, 0
; GLOBAL-NEXT: blr
%mul = fmul float %x, 42.0
%fma = call fast float @llvm.fma.f32(float %x, float 7.0, float %mul)
ret float %fma
}
; This shouldn't change anything - the intermediate fmul result is now also flagged.
; FMFDEBUG-LABEL: Optimized lowered selection DAG: %bb.0 'fmul_fma_fast2:'
; FMFDEBUG: fmul nnan ninf nsz arcp contract afn reassoc {{t[0-9]+}}
; FMFDEBUG: Type-legalized selection DAG: %bb.0 'fmul_fma_fast2:'
; GLOBALDEBUG-LABEL: Optimized lowered selection DAG: %bb.0 'fmul_fma_fast2:'
; GLOBALDEBUG: fmul nnan ninf nsz arcp contract afn reassoc {{t[0-9]+}}
; GLOBALDEBUG: Type-legalized selection DAG: %bb.0 'fmul_fma_fast2:'
define float @fmul_fma_fast2(float %x) {
; FMF-LABEL: fmul_fma_fast2:
; FMF: # %bb.0:
; FMF-NEXT: addis 3, 2, .LCPI10_0@toc@ha
; FMF-NEXT: lfs 0, .LCPI10_0@toc@l(3)
; FMF-NEXT: xsmulsp 1, 1, 0
; FMF-NEXT: blr
;
; GLOBAL-LABEL: fmul_fma_fast2:
; GLOBAL: # %bb.0:
; GLOBAL-NEXT: addis 3, 2, .LCPI10_0@toc@ha
; GLOBAL-NEXT: lfs 0, .LCPI10_0@toc@l(3)
; GLOBAL-NEXT: xsmulsp 1, 1, 0
; GLOBAL-NEXT: blr
%mul = fmul fast float %x, 42.0
%fma = call fast float @llvm.fma.f32(float %x, float 7.0, float %mul)
ret float %fma
}
; Reduced precision for sqrt is allowed - should use estimate and NR iterations.
; FMFDEBUG-LABEL: Optimized lowered selection DAG: %bb.0 'sqrt_afn_ieee:'
; FMFDEBUG: fmul ninf afn {{t[0-9]+}}
; FMFDEBUG: Type-legalized selection DAG: %bb.0 'sqrt_afn_ieee:'
; GLOBALDEBUG-LABEL: Optimized lowered selection DAG: %bb.0 'sqrt_afn_ieee:'
; GLOBALDEBUG: fmul ninf afn {{t[0-9]+}}
; GLOBALDEBUG: Type-legalized selection DAG: %bb.0 'sqrt_afn_ieee:'
define float @sqrt_afn_ieee(float %x) #0 {
; FMF-LABEL: sqrt_afn_ieee:
; FMF: # %bb.0:
; FMF-NEXT: xsabsdp 0, 1
; FMF-NEXT: addis 3, 2, .LCPI11_2@toc@ha
; FMF-NEXT: lfs 2, .LCPI11_2@toc@l(3)
; FMF-NEXT: fcmpu 0, 0, 2
; FMF-NEXT: xxlxor 0, 0, 0
; FMF-NEXT: blt 0, .LBB11_2
; FMF-NEXT: # %bb.1:
; FMF-NEXT: xsrsqrtesp 0, 1
; FMF-NEXT: addis 3, 2, .LCPI11_0@toc@ha
; FMF-NEXT: lfs 2, .LCPI11_0@toc@l(3)
; FMF-NEXT: addis 3, 2, .LCPI11_1@toc@ha
; FMF-NEXT: lfs 3, .LCPI11_1@toc@l(3)
; FMF-NEXT: xsmulsp 1, 1, 0
; FMF-NEXT: xsmulsp 0, 1, 0
; FMF-NEXT: xsmulsp 1, 1, 2
; FMF-NEXT: xsaddsp 0, 0, 3
; FMF-NEXT: xsmulsp 0, 1, 0
; FMF-NEXT: .LBB11_2:
; FMF-NEXT: fmr 1, 0
; FMF-NEXT: blr
;
; GLOBAL-LABEL: sqrt_afn_ieee:
; GLOBAL: # %bb.0:
; GLOBAL-NEXT: xsabsdp 0, 1
; GLOBAL-NEXT: addis 3, 2, .LCPI11_2@toc@ha
; GLOBAL-NEXT: lfs 2, .LCPI11_2@toc@l(3)
; GLOBAL-NEXT: fcmpu 0, 0, 2
; GLOBAL-NEXT: xxlxor 0, 0, 0
; GLOBAL-NEXT: blt 0, .LBB11_2
; GLOBAL-NEXT: # %bb.1:
; GLOBAL-NEXT: xsrsqrtesp 0, 1
; GLOBAL-NEXT: addis 3, 2, .LCPI11_0@toc@ha
; GLOBAL-NEXT: lfs 2, .LCPI11_0@toc@l(3)
; GLOBAL-NEXT: addis 3, 2, .LCPI11_1@toc@ha
; GLOBAL-NEXT: lfs 3, .LCPI11_1@toc@l(3)
; GLOBAL-NEXT: xsmulsp 1, 1, 0
; GLOBAL-NEXT: xsmaddasp 2, 1, 0
; GLOBAL-NEXT: xsmulsp 0, 1, 3
; GLOBAL-NEXT: xsmulsp 0, 0, 2
; GLOBAL-NEXT: .LBB11_2:
; GLOBAL-NEXT: fmr 1, 0
; GLOBAL-NEXT: blr
%rt = call afn ninf float @llvm.sqrt.f32(float %x)
ret float %rt
}
define float @sqrt_afn_ieee_inf(float %x) #0 {
; FMF-LABEL: sqrt_afn_ieee_inf:
; FMF: # %bb.0:
; FMF-NEXT: xssqrtsp 1, 1
; FMF-NEXT: blr
;
; GLOBAL-LABEL: sqrt_afn_ieee_inf:
; GLOBAL: # %bb.0:
; GLOBAL-NEXT: xssqrtsp 1, 1
; GLOBAL-NEXT: blr
%rt = call afn float @llvm.sqrt.f32(float %x)
ret float %rt
}
; FMFDEBUG-LABEL: Optimized lowered selection DAG: %bb.0 'sqrt_afn_preserve_sign:'
; FMFDEBUG: fmul ninf afn {{t[0-9]+}}
; FMFDEBUG: Type-legalized selection DAG: %bb.0 'sqrt_afn_preserve_sign:'
; GLOBALDEBUG-LABEL: Optimized lowered selection DAG: %bb.0 'sqrt_afn_preserve_sign:'
; GLOBALDEBUG: fmul ninf afn {{t[0-9]+}}
; GLOBALDEBUG: Type-legalized selection DAG: %bb.0 'sqrt_afn_preserve_sign:'
define float @sqrt_afn_preserve_sign(float %x) #1 {
; FMF-LABEL: sqrt_afn_preserve_sign:
; FMF: # %bb.0:
; FMF-NEXT: xxlxor 0, 0, 0
; FMF-NEXT: fcmpu 0, 1, 0
; FMF-NEXT: beq 0, .LBB13_2
; FMF-NEXT: # %bb.1:
; FMF-NEXT: xsrsqrtesp 0, 1
; FMF-NEXT: addis 3, 2, .LCPI13_0@toc@ha
; FMF-NEXT: lfs 2, .LCPI13_0@toc@l(3)
; FMF-NEXT: addis 3, 2, .LCPI13_1@toc@ha
; FMF-NEXT: lfs 3, .LCPI13_1@toc@l(3)
; FMF-NEXT: xsmulsp 1, 1, 0
; FMF-NEXT: xsmulsp 0, 1, 0
; FMF-NEXT: xsmulsp 1, 1, 2
; FMF-NEXT: xsaddsp 0, 0, 3
; FMF-NEXT: xsmulsp 0, 1, 0
; FMF-NEXT: .LBB13_2:
; FMF-NEXT: fmr 1, 0
; FMF-NEXT: blr
;
; GLOBAL-LABEL: sqrt_afn_preserve_sign:
; GLOBAL: # %bb.0:
; GLOBAL-NEXT: xxlxor 0, 0, 0
; GLOBAL-NEXT: fcmpu 0, 1, 0
; GLOBAL-NEXT: beq 0, .LBB13_2
; GLOBAL-NEXT: # %bb.1:
; GLOBAL-NEXT: xsrsqrtesp 0, 1
; GLOBAL-NEXT: addis 3, 2, .LCPI13_0@toc@ha
; GLOBAL-NEXT: lfs 2, .LCPI13_0@toc@l(3)
; GLOBAL-NEXT: addis 3, 2, .LCPI13_1@toc@ha
; GLOBAL-NEXT: lfs 3, .LCPI13_1@toc@l(3)
; GLOBAL-NEXT: xsmulsp 1, 1, 0
; GLOBAL-NEXT: xsmaddasp 2, 1, 0
; GLOBAL-NEXT: xsmulsp 0, 1, 3
; GLOBAL-NEXT: xsmulsp 0, 0, 2
; GLOBAL-NEXT: .LBB13_2:
; GLOBAL-NEXT: fmr 1, 0
; GLOBAL-NEXT: blr
%rt = call afn ninf float @llvm.sqrt.f32(float %x)
ret float %rt
}
define float @sqrt_afn_preserve_sign_inf(float %x) #1 {
; FMF-LABEL: sqrt_afn_preserve_sign_inf:
; FMF: # %bb.0:
; FMF-NEXT: xssqrtsp 1, 1
; FMF-NEXT: blr
;
; GLOBAL-LABEL: sqrt_afn_preserve_sign_inf:
; GLOBAL: # %bb.0:
; GLOBAL-NEXT: xssqrtsp 1, 1
; GLOBAL-NEXT: blr
%rt = call afn float @llvm.sqrt.f32(float %x)
ret float %rt
}
; The call is now fully 'fast'. This implies that approximation is allowed.
; FMFDEBUG-LABEL: Optimized lowered selection DAG: %bb.0 'sqrt_fast_ieee:'
; FMFDEBUG: fmul ninf contract afn reassoc {{t[0-9]+}}
; FMFDEBUG: Type-legalized selection DAG: %bb.0 'sqrt_fast_ieee:'
; GLOBALDEBUG-LABEL: Optimized lowered selection DAG: %bb.0 'sqrt_fast_ieee:'
; GLOBALDEBUG: fmul ninf contract afn reassoc {{t[0-9]+}}
; GLOBALDEBUG: Type-legalized selection DAG: %bb.0 'sqrt_fast_ieee:'
define float @sqrt_fast_ieee(float %x) #0 {
; FMF-LABEL: sqrt_fast_ieee:
; FMF: # %bb.0:
; FMF-NEXT: xsabsdp 0, 1
; FMF-NEXT: addis 3, 2, .LCPI15_2@toc@ha
; FMF-NEXT: lfs 2, .LCPI15_2@toc@l(3)
; FMF-NEXT: fcmpu 0, 0, 2
; FMF-NEXT: xxlxor 0, 0, 0
; FMF-NEXT: blt 0, .LBB15_2
; FMF-NEXT: # %bb.1:
; FMF-NEXT: xsrsqrtesp 0, 1
; FMF-NEXT: addis 3, 2, .LCPI15_0@toc@ha
; FMF-NEXT: lfs 2, .LCPI15_0@toc@l(3)
; FMF-NEXT: addis 3, 2, .LCPI15_1@toc@ha
; FMF-NEXT: lfs 3, .LCPI15_1@toc@l(3)
; FMF-NEXT: xsmulsp 1, 1, 0
; FMF-NEXT: xsmaddasp 2, 1, 0
; FMF-NEXT: xsmulsp 0, 1, 3
; FMF-NEXT: xsmulsp 0, 0, 2
; FMF-NEXT: .LBB15_2:
; FMF-NEXT: fmr 1, 0
; FMF-NEXT: blr
;
; GLOBAL-LABEL: sqrt_fast_ieee:
; GLOBAL: # %bb.0:
; GLOBAL-NEXT: xsabsdp 0, 1
; GLOBAL-NEXT: addis 3, 2, .LCPI15_2@toc@ha
; GLOBAL-NEXT: lfs 2, .LCPI15_2@toc@l(3)
; GLOBAL-NEXT: fcmpu 0, 0, 2
; GLOBAL-NEXT: xxlxor 0, 0, 0
; GLOBAL-NEXT: blt 0, .LBB15_2
; GLOBAL-NEXT: # %bb.1:
; GLOBAL-NEXT: xsrsqrtesp 0, 1
; GLOBAL-NEXT: addis 3, 2, .LCPI15_0@toc@ha
; GLOBAL-NEXT: lfs 2, .LCPI15_0@toc@l(3)
; GLOBAL-NEXT: addis 3, 2, .LCPI15_1@toc@ha
; GLOBAL-NEXT: lfs 3, .LCPI15_1@toc@l(3)
; GLOBAL-NEXT: xsmulsp 1, 1, 0
; GLOBAL-NEXT: xsmaddasp 2, 1, 0
; GLOBAL-NEXT: xsmulsp 0, 1, 3
; GLOBAL-NEXT: xsmulsp 0, 0, 2
; GLOBAL-NEXT: .LBB15_2:
; GLOBAL-NEXT: fmr 1, 0
; GLOBAL-NEXT: blr
%rt = call contract reassoc afn ninf float @llvm.sqrt.f32(float %x)
ret float %rt
}
; The call is now fully 'fast'. This implies that approximation is allowed.
; FMFDEBUG-LABEL: Optimized lowered selection DAG: %bb.0 'sqrt_fast_preserve_sign:'
; FMFDEBUG: fmul ninf contract afn reassoc {{t[0-9]+}}
; FMFDEBUG: Type-legalized selection DAG: %bb.0 'sqrt_fast_preserve_sign:'
; GLOBALDEBUG-LABEL: Optimized lowered selection DAG: %bb.0 'sqrt_fast_preserve_sign:'
; GLOBALDEBUG: fmul ninf contract afn reassoc {{t[0-9]+}}
; GLOBALDEBUG: Type-legalized selection DAG: %bb.0 'sqrt_fast_preserve_sign:'
define float @sqrt_fast_preserve_sign(float %x) #1 {
; FMF-LABEL: sqrt_fast_preserve_sign:
; FMF: # %bb.0:
; FMF-NEXT: xxlxor 0, 0, 0
; FMF-NEXT: fcmpu 0, 1, 0
; FMF-NEXT: beq 0, .LBB16_2
; FMF-NEXT: # %bb.1:
; FMF-NEXT: xsrsqrtesp 0, 1
; FMF-NEXT: addis 3, 2, .LCPI16_0@toc@ha
; FMF-NEXT: lfs 2, .LCPI16_0@toc@l(3)
; FMF-NEXT: addis 3, 2, .LCPI16_1@toc@ha
; FMF-NEXT: lfs 3, .LCPI16_1@toc@l(3)
; FMF-NEXT: xsmulsp 1, 1, 0
; FMF-NEXT: xsmaddasp 2, 1, 0
; FMF-NEXT: xsmulsp 0, 1, 3
; FMF-NEXT: xsmulsp 0, 0, 2
; FMF-NEXT: .LBB16_2:
; FMF-NEXT: fmr 1, 0
; FMF-NEXT: blr
;
; GLOBAL-LABEL: sqrt_fast_preserve_sign:
; GLOBAL: # %bb.0:
; GLOBAL-NEXT: xxlxor 0, 0, 0
; GLOBAL-NEXT: fcmpu 0, 1, 0
; GLOBAL-NEXT: beq 0, .LBB16_2
; GLOBAL-NEXT: # %bb.1:
; GLOBAL-NEXT: xsrsqrtesp 0, 1
; GLOBAL-NEXT: addis 3, 2, .LCPI16_0@toc@ha
; GLOBAL-NEXT: lfs 2, .LCPI16_0@toc@l(3)
; GLOBAL-NEXT: addis 3, 2, .LCPI16_1@toc@ha
; GLOBAL-NEXT: lfs 3, .LCPI16_1@toc@l(3)
; GLOBAL-NEXT: xsmulsp 1, 1, 0
; GLOBAL-NEXT: xsmaddasp 2, 1, 0
; GLOBAL-NEXT: xsmulsp 0, 1, 3
; GLOBAL-NEXT: xsmulsp 0, 0, 2
; GLOBAL-NEXT: .LBB16_2:
; GLOBAL-NEXT: fmr 1, 0
; GLOBAL-NEXT: blr
%rt = call contract reassoc ninf afn float @llvm.sqrt.f32(float %x)
ret float %rt
}
; fcmp can have fast-math-flags.
; FMFDEBUG-LABEL: Optimized lowered selection DAG: %bb.0 'fcmp_nnan:'
; FMFDEBUG: select_cc nnan {{t[0-9]+}}
; FMFDEBUG: Type-legalized selection DAG: %bb.0 'fcmp_nnan:'
; GLOBALDEBUG-LABEL: Optimized lowered selection DAG: %bb.0 'fcmp_nnan:'
; GLOBALDEBUG: select_cc nnan {{t[0-9]+}}
; GLOBALDEBUG: Type-legalized selection DAG: %bb.0 'fcmp_nnan:'
define double @fcmp_nnan(double %a, double %y, double %z) {
; FMF-LABEL: fcmp_nnan:
; FMF: # %bb.0:
; FMF-NEXT: xxlxor 0, 0, 0
; FMF-NEXT: xscmpudp 0, 1, 0
; FMF-NEXT: blt 0, .LBB17_2
; FMF-NEXT: # %bb.1:
; FMF-NEXT: fmr 3, 2
; FMF-NEXT: .LBB17_2:
; FMF-NEXT: fmr 1, 3
; FMF-NEXT: blr
;
; GLOBAL-LABEL: fcmp_nnan:
; GLOBAL: # %bb.0:
; GLOBAL-NEXT: xxlxor 0, 0, 0
; GLOBAL-NEXT: xscmpudp 0, 1, 0
; GLOBAL-NEXT: blt 0, .LBB17_2
; GLOBAL-NEXT: # %bb.1:
; GLOBAL-NEXT: fmr 3, 2
; GLOBAL-NEXT: .LBB17_2:
; GLOBAL-NEXT: fmr 1, 3
; GLOBAL-NEXT: blr
%cmp = fcmp nnan ult double %a, 0.0
%z.y = select i1 %cmp, double %z, double %y
ret double %z.y
}
; FP library calls can have fast-math-flags.
; FMFDEBUG-LABEL: Optimized lowered selection DAG: %bb.0 'log2_approx:'
; FMFDEBUG: ch,glue = PPCISD::CALL_NOP t11, TargetGlobalAddress:i64<ptr @log2>
; FMFDEBUG: ch,glue = callseq_end t15, TargetConstant:i64<32>, TargetConstant:i64<0>, t15:1
; FMFDEBUG: f64,ch,glue = CopyFromReg t16, Register:f64 $f1, t16:1
; FMFDEBUG: Type-legalized selection DAG: %bb.0 'log2_approx:'
; GLOBALDEBUG-LABEL: Optimized lowered selection DAG: %bb.0 'log2_approx:'
; GLOBALDEBUG: ch,glue = PPCISD::CALL_NOP t11, TargetGlobalAddress:i64<ptr @log2>
; GLOBALDEBUG: ch,glue = callseq_end t15, TargetConstant:i64<32>, TargetConstant:i64<0>, t15:1
; GLOBALDEBUG: f64,ch,glue = CopyFromReg t16, Register:f64 $f1, t16:1
; GLOBALDEBUG: Type-legalized selection DAG: %bb.0 'log2_approx:'
declare double @log2(double)
define double @log2_approx(double %x) nounwind {
; FMF-LABEL: log2_approx:
; FMF: # %bb.0:
; FMF-NEXT: mflr 0
; FMF-NEXT: std 0, 16(1)
; FMF-NEXT: stdu 1, -32(1)
; FMF-NEXT: bl log2
; FMF-NEXT: nop
; FMF-NEXT: addi 1, 1, 32
; FMF-NEXT: ld 0, 16(1)
; FMF-NEXT: mtlr 0
; FMF-NEXT: blr
;
; GLOBAL-LABEL: log2_approx:
; GLOBAL: # %bb.0:
; GLOBAL-NEXT: mflr 0
; GLOBAL-NEXT: std 0, 16(1)
; GLOBAL-NEXT: stdu 1, -32(1)
; GLOBAL-NEXT: bl log2
; GLOBAL-NEXT: nop
; GLOBAL-NEXT: addi 1, 1, 32
; GLOBAL-NEXT: ld 0, 16(1)
; GLOBAL-NEXT: mtlr 0
; GLOBAL-NEXT: blr
%r = call afn double @log2(double %x)
ret double %r
}
; -(X - Y) --> (Y - X)
; FMFDEBUG-LABEL: Optimized lowered selection DAG: %bb.0 'fneg_fsub_nozeros_1:'
; FMFDEBUG: fsub nsz {{t[0-9]+}}, {{t[0-9]+}}
; FMFDEBUG: Type-legalized selection DAG: %bb.0 'fneg_fsub_nozeros_1:'
; GLOBALDEBUG-LABEL: Optimized lowered selection DAG: %bb.0 'fneg_fsub_nozeros_1:'
; GLOBALDEBUG: fsub nsz {{t[0-9]+}}, {{t[0-9]+}}
; GLOBALDEBUG: Type-legalized selection DAG: %bb.0 'fneg_fsub_nozeros_1:'
define float @fneg_fsub_nozeros_1(float %x, float %y, float %z) {
; FMF-LABEL: fneg_fsub_nozeros_1:
; FMF: # %bb.0:
; FMF-NEXT: xssubsp 1, 2, 1
; FMF-NEXT: blr
;
; GLOBAL-LABEL: fneg_fsub_nozeros_1:
; GLOBAL: # %bb.0:
; GLOBAL-NEXT: xssubsp 1, 2, 1
; GLOBAL-NEXT: blr
%neg = fsub float %x, %y
%add = fsub nsz float 0.0, %neg
ret float %add
}
attributes #0 = { "denormal-fp-math"="ieee,ieee" }
attributes #1 = { "denormal-fp-math"="preserve-sign,preserve-sign" }