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llvm-mirror/test/CodeGen/Thumb2/float-cmp.ll
Craig Topper c15731f7f1 [TargetLowering][ARM][X86] Change softenSetCCOperands handling of ONE to avoid spurious exceptions for QNANs with strict FP quiet compares
ONE is currently softened to OGT | OLT. But the libcalls for OGT and OLT libcalls will trigger an exception for QNAN. At least for X86 with libgcc. UEQ on the other hand uses UO | OEQ. The UO and OEQ libcalls will not trigger an exception for QNAN.

This patch changes ONE to use the inverse of the UEQ lowering. So we now produce O & UNE. Technically the existing behavior was correct for a signalling ONE, but since I don't know how to generate one of those from clang that seemed like something we can deal with later as we would need to fix other predicates as well. Also removing spurious exceptions seemed better than missing an exception.

There are also problems with quiet OGT/OLT/OLE/OGE, but those are harder to fix.

Differential Revision: https://reviews.llvm.org/D72477
2020-01-10 11:00:17 -08:00

299 lines
6.7 KiB
LLVM

; RUN: llc < %s -mtriple=thumbv7-none-eabi -mcpu=cortex-m3 | FileCheck %s -check-prefix=CHECK -check-prefix=NONE
; RUN: llc < %s -mtriple=thumbv7-none-eabihf -mcpu=cortex-m4 | FileCheck %s -check-prefix=CHECK -check-prefix=HARD -check-prefix=SP
; RUN: llc < %s -mtriple=thumbv7-none-eabihf -mcpu=cortex-m7 | FileCheck %s -check-prefix=CHECK -check-prefix=HARD -check-prefix=DP
; RUN: llc < %s -mtriple=thumbv7-none-eabihf -mcpu=cortex-a8 | FileCheck %s -check-prefix=CHECK -check-prefix=HARD -check-prefix=DP
define i1 @cmp_f_false(float %a, float %b) {
; CHECK-LABEL: cmp_f_false:
; NONE: movs r0, #0
; HARD: movs r0, #0
%1 = fcmp false float %a, %b
ret i1 %1
}
define i1 @cmp_f_oeq(float %a, float %b) {
; CHECK-LABEL: cmp_f_oeq:
; NONE: bl __aeabi_fcmpeq
; HARD: vcmp.f32
; HARD: moveq r0, #1
%1 = fcmp oeq float %a, %b
ret i1 %1
}
define i1 @cmp_f_ogt(float %a, float %b) {
; CHECK-LABEL: cmp_f_ogt:
; NONE: bl __aeabi_fcmpgt
; HARD: vcmp.f32
; HARD: movgt r0, #1
%1 = fcmp ogt float %a, %b
ret i1 %1
}
define i1 @cmp_f_oge(float %a, float %b) {
; CHECK-LABEL: cmp_f_oge:
; NONE: bl __aeabi_fcmpge
; HARD: vcmp.f32
; HARD: movge r0, #1
%1 = fcmp oge float %a, %b
ret i1 %1
}
define i1 @cmp_f_olt(float %a, float %b) {
; CHECK-LABEL: cmp_f_olt:
; NONE: bl __aeabi_fcmplt
; HARD: vcmp.f32
; HARD: movmi r0, #1
%1 = fcmp olt float %a, %b
ret i1 %1
}
define i1 @cmp_f_ole(float %a, float %b) {
; CHECK-LABEL: cmp_f_ole:
; NONE: bl __aeabi_fcmple
; HARD: vcmp.f32
; HARD: movls r0, #1
%1 = fcmp ole float %a, %b
ret i1 %1
}
define i1 @cmp_f_one(float %a, float %b) {
; CHECK-LABEL: cmp_f_one:
; NONE: bl __aeabi_fcmpeq
; NONE: bl __aeabi_fcmpun
; HARD: vcmp.f32
; HARD: movmi r0, #1
; HARD: movgt r0, #1
%1 = fcmp one float %a, %b
ret i1 %1
}
define i1 @cmp_f_ord(float %a, float %b) {
; CHECK-LABEL: cmp_f_ord:
; NONE: bl __aeabi_fcmpun
; HARD: vcmp.f32
; HARD: movvc r0, #1
%1 = fcmp ord float %a, %b
ret i1 %1
}
define i1 @cmp_f_ueq(float %a, float %b) {
; CHECK-LABEL: cmp_f_ueq:
; NONE: bl __aeabi_fcmpeq
; NONE: bl __aeabi_fcmpun
; HARD: vcmp.f32
; HARD: moveq r0, #1
; HARD: movvs r0, #1
%1 = fcmp ueq float %a, %b
ret i1 %1
}
define i1 @cmp_f_ugt(float %a, float %b) {
; CHECK-LABEL: cmp_f_ugt:
; NONE: bl __aeabi_fcmple
; NONE-NEXT: clz r0, r0
; NONE-NEXT: lsrs r0, r0, #5
; HARD: vcmp.f32
; HARD: movhi r0, #1
%1 = fcmp ugt float %a, %b
ret i1 %1
}
define i1 @cmp_f_uge(float %a, float %b) {
; CHECK-LABEL: cmp_f_uge:
; NONE: bl __aeabi_fcmplt
; NONE-NEXT: clz r0, r0
; NONE-NEXT: lsrs r0, r0, #5
; HARD: vcmp.f32
; HARD: movpl r0, #1
%1 = fcmp uge float %a, %b
ret i1 %1
}
define i1 @cmp_f_ult(float %a, float %b) {
; CHECK-LABEL: cmp_f_ult:
; NONE: bl __aeabi_fcmpge
; NONE-NEXT: clz r0, r0
; NONE-NEXT: lsrs r0, r0, #5
; HARD: vcmp.f32
; HARD: movlt r0, #1
%1 = fcmp ult float %a, %b
ret i1 %1
}
define i1 @cmp_f_ule(float %a, float %b) {
; CHECK-LABEL: cmp_f_ule:
; NONE: bl __aeabi_fcmpgt
; NONE-NEXT: clz r0, r0
; NONE-NEXT: lsrs r0, r0, #5
; HARD: vcmp.f32
; HARD: movle r0, #1
%1 = fcmp ule float %a, %b
ret i1 %1
}
define i1 @cmp_f_une(float %a, float %b) {
; CHECK-LABEL: cmp_f_une:
; NONE: bl __aeabi_fcmpeq
; HARD: vcmp.f32
; HARD: movne r0, #1
%1 = fcmp une float %a, %b
ret i1 %1
}
define i1 @cmp_f_uno(float %a, float %b) {
; CHECK-LABEL: cmp_f_uno:
; NONE: bl __aeabi_fcmpun
; HARD: vcmp.f32
; HARD: movvs r0, #1
%1 = fcmp uno float %a, %b
ret i1 %1
}
define i1 @cmp_f_true(float %a, float %b) {
; CHECK-LABEL: cmp_f_true:
; NONE: movs r0, #1
; HARD: movs r0, #1
%1 = fcmp true float %a, %b
ret i1 %1
}
define i1 @cmp_d_false(double %a, double %b) {
; CHECK-LABEL: cmp_d_false:
; NONE: movs r0, #0
; HARD: movs r0, #0
%1 = fcmp false double %a, %b
ret i1 %1
}
define i1 @cmp_d_oeq(double %a, double %b) {
; CHECK-LABEL: cmp_d_oeq:
; NONE: bl __aeabi_dcmpeq
; SP: bl __aeabi_dcmpeq
; DP: vcmp.f64
; DP: moveq r0, #1
%1 = fcmp oeq double %a, %b
ret i1 %1
}
define i1 @cmp_d_ogt(double %a, double %b) {
; CHECK-LABEL: cmp_d_ogt:
; NONE: bl __aeabi_dcmpgt
; SP: bl __aeabi_dcmpgt
; DP: vcmp.f64
; DP: movgt r0, #1
%1 = fcmp ogt double %a, %b
ret i1 %1
}
define i1 @cmp_d_oge(double %a, double %b) {
; CHECK-LABEL: cmp_d_oge:
; NONE: bl __aeabi_dcmpge
; SP: bl __aeabi_dcmpge
; DP: vcmp.f64
; DP: movge r0, #1
%1 = fcmp oge double %a, %b
ret i1 %1
}
define i1 @cmp_d_olt(double %a, double %b) {
; CHECK-LABEL: cmp_d_olt:
; NONE: bl __aeabi_dcmplt
; SP: bl __aeabi_dcmplt
; DP: vcmp.f64
; DP: movmi r0, #1
%1 = fcmp olt double %a, %b
ret i1 %1
}
define i1 @cmp_d_ole(double %a, double %b) {
; CHECK-LABEL: cmp_d_ole:
; NONE: bl __aeabi_dcmple
; SP: bl __aeabi_dcmple
; DP: vcmp.f64
; DP: movls r0, #1
%1 = fcmp ole double %a, %b
ret i1 %1
}
define i1 @cmp_d_one(double %a, double %b) {
; CHECK-LABEL: cmp_d_one:
; NONE: bl __aeabi_dcmpeq
; NONE: bl __aeabi_dcmpun
; SP: bl __aeabi_dcmpeq
; SP: bl __aeabi_dcmpun
; DP: vcmp.f64
; DP: movmi r0, #1
; DP: movgt r0, #1
%1 = fcmp one double %a, %b
ret i1 %1
}
define i1 @cmp_d_ord(double %a, double %b) {
; CHECK-LABEL: cmp_d_ord:
; NONE: bl __aeabi_dcmpun
; SP: bl __aeabi_dcmpun
; DP: vcmp.f64
; DP: movvc r0, #1
%1 = fcmp ord double %a, %b
ret i1 %1
}
define i1 @cmp_d_ugt(double %a, double %b) {
; CHECK-LABEL: cmp_d_ugt:
; NONE: bl __aeabi_dcmple
; SP: bl __aeabi_dcmple
; DP: vcmp.f64
; DP: movhi r0, #1
%1 = fcmp ugt double %a, %b
ret i1 %1
}
define i1 @cmp_d_ult(double %a, double %b) {
; CHECK-LABEL: cmp_d_ult:
; NONE: bl __aeabi_dcmpge
; SP: bl __aeabi_dcmpge
; DP: vcmp.f64
; DP: movlt r0, #1
%1 = fcmp ult double %a, %b
ret i1 %1
}
define i1 @cmp_d_uno(double %a, double %b) {
; CHECK-LABEL: cmp_d_uno:
; NONE: bl __aeabi_dcmpun
; SP: bl __aeabi_dcmpun
; DP: vcmp.f64
; DP: movvs r0, #1
%1 = fcmp uno double %a, %b
ret i1 %1
}
define i1 @cmp_d_true(double %a, double %b) {
; CHECK-LABEL: cmp_d_true:
; NONE: movs r0, #1
; HARD: movs r0, #1
%1 = fcmp true double %a, %b
ret i1 %1
}
define i1 @cmp_d_ueq(double %a, double %b) {
; CHECK-LABEL: cmp_d_ueq:
; NONE: bl __aeabi_dcmpeq
; NONE: bl __aeabi_dcmpun
; SP: bl __aeabi_dcmpeq
; SP: bl __aeabi_dcmpun
; DP: vcmp.f64
; DP: moveq r0, #1
; DP: movvs r0, #1
%1 = fcmp ueq double %a, %b
ret i1 %1
}
define i1 @cmp_d_uge(double %a, double %b) {
; CHECK-LABEL: cmp_d_uge:
; NONE: bl __aeabi_dcmplt
; SP: bl __aeabi_dcmplt
; DP: vcmp.f64
; DP: movpl r0, #1
%1 = fcmp uge double %a, %b
ret i1 %1
}
define i1 @cmp_d_ule(double %a, double %b) {
; CHECK-LABEL: cmp_d_ule:
; NONE: bl __aeabi_dcmpgt
; SP: bl __aeabi_dcmpgt
; DP: vcmp.f64
; DP: movle r0, #1
%1 = fcmp ule double %a, %b
ret i1 %1
}
define i1 @cmp_d_une(double %a, double %b) {
; CHECK-LABEL: cmp_d_une:
; NONE: bl __aeabi_dcmpeq
; SP: bl __aeabi_dcmpeq
; DP: vcmp.f64
; DP: movne r0, #1
%1 = fcmp une double %a, %b
ret i1 %1
}