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llvm-mirror/test/CodeGen/PowerPC/fp-to-int-to-fp.ll
Esme-Yi f83e7bf498 [PowerPC] Materialize i64 constants by enumerated patterns.
Summary: Some constants can be handled with less instructions than our current results. And it seems our original approach is not very easy to extend. Therefore this patch proposes to materialize all 64-bit constants by enumerated patterns.
I traversed almost all constants to verified the functionality of these pattens. A traversed comparison of the number of instructions used by the original method and the new method has also been completed, where no degradation was caused by this patch. This patch also passed Bootstrap test and SPEC test.
Improvements of this patch are shown in llvm/test/CodeGen/PowerPC/constants-i64.ll

Reviewed By: steven.zhang, stefanp

Differential Revision: https://reviews.llvm.org/D92089
2020-12-21 05:21:07 +00:00

331 lines
8.5 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -verify-machineinstrs -mcpu=a2 < %s | FileCheck %s -check-prefix=FPCVT
; RUN: llc -verify-machineinstrs -mcpu=ppc64 < %s | FileCheck %s -check-prefix=PPC64
; RUN: llc -verify-machineinstrs -mcpu=pwr9 < %s | FileCheck %s -check-prefix=PWR9
target datalayout = "E-m:e-i64:64-n32:64"
target triple = "powerpc64-unknown-linux-gnu"
; Function Attrs: nounwind readnone
define float @fool(float %X) #0 {
; FPCVT-LABEL: fool:
; FPCVT: # %bb.0: # %entry
; FPCVT-NEXT: friz 1, 1
; FPCVT-NEXT: blr
;
; PPC64-LABEL: fool:
; PPC64: # %bb.0: # %entry
; PPC64-NEXT: fctidz 0, 1
; PPC64-NEXT: fcfid 0, 0
; PPC64-NEXT: frsp 1, 0
; PPC64-NEXT: blr
;
; PWR9-LABEL: fool:
; PWR9: # %bb.0: # %entry
; PWR9-NEXT: xsrdpiz 1, 1
; PWR9-NEXT: blr
entry:
%conv = fptosi float %X to i64
%conv1 = sitofp i64 %conv to float
ret float %conv1
}
; Function Attrs: nounwind readnone
define double @foodl(double %X) #0 {
; FPCVT-LABEL: foodl:
; FPCVT: # %bb.0: # %entry
; FPCVT-NEXT: friz 1, 1
; FPCVT-NEXT: blr
;
; PPC64-LABEL: foodl:
; PPC64: # %bb.0: # %entry
; PPC64-NEXT: fctidz 0, 1
; PPC64-NEXT: fcfid 1, 0
; PPC64-NEXT: blr
;
; PWR9-LABEL: foodl:
; PWR9: # %bb.0: # %entry
; PWR9-NEXT: xsrdpiz 1, 1
; PWR9-NEXT: blr
entry:
%conv = fptosi double %X to i64
%conv1 = sitofp i64 %conv to double
ret double %conv1
}
; Function Attrs: nounwind readnone
define float @fooul(float %X) #0 {
; FPCVT-LABEL: fooul:
; FPCVT: # %bb.0: # %entry
; FPCVT-NEXT: friz 1, 1
; FPCVT-NEXT: blr
;
; PPC64-LABEL: fooul:
; PPC64: # %bb.0: # %entry
; PPC64-NEXT: addis 3, 2, .LCPI2_0@toc@ha
; PPC64-NEXT: li 4, 1
; PPC64-NEXT: lfs 0, .LCPI2_0@toc@l(3)
; PPC64-NEXT: rldic 4, 4, 63, 0
; PPC64-NEXT: fsubs 2, 1, 0
; PPC64-NEXT: fcmpu 0, 1, 0
; PPC64-NEXT: fctidz 2, 2
; PPC64-NEXT: stfd 2, -8(1)
; PPC64-NEXT: fctidz 2, 1
; PPC64-NEXT: stfd 2, -16(1)
; PPC64-NEXT: ld 3, -8(1)
; PPC64-NEXT: ld 5, -16(1)
; PPC64-NEXT: xor 3, 3, 4
; PPC64-NEXT: bc 12, 0, .LBB2_1
; PPC64-NEXT: b .LBB2_2
; PPC64-NEXT: .LBB2_1: # %entry
; PPC64-NEXT: addi 3, 5, 0
; PPC64-NEXT: .LBB2_2: # %entry
; PPC64-NEXT: sradi 4, 3, 53
; PPC64-NEXT: clrldi 5, 3, 63
; PPC64-NEXT: addi 4, 4, 1
; PPC64-NEXT: cmpldi 4, 1
; PPC64-NEXT: rldicl 4, 3, 63, 1
; PPC64-NEXT: or 5, 5, 4
; PPC64-NEXT: rldicl 6, 5, 11, 53
; PPC64-NEXT: addi 6, 6, 1
; PPC64-NEXT: clrldi 7, 5, 53
; PPC64-NEXT: cmpldi 1, 6, 1
; PPC64-NEXT: clrldi 6, 3, 53
; PPC64-NEXT: addi 7, 7, 2047
; PPC64-NEXT: addi 6, 6, 2047
; PPC64-NEXT: or 4, 7, 4
; PPC64-NEXT: or 6, 6, 3
; PPC64-NEXT: rldicl 4, 4, 53, 11
; PPC64-NEXT: rldicr 6, 6, 0, 52
; PPC64-NEXT: bc 12, 1, .LBB2_4
; PPC64-NEXT: # %bb.3: # %entry
; PPC64-NEXT: ori 6, 3, 0
; PPC64-NEXT: b .LBB2_4
; PPC64-NEXT: .LBB2_4: # %entry
; PPC64-NEXT: rldicl 4, 4, 11, 1
; PPC64-NEXT: cmpdi 3, 0
; PPC64-NEXT: std 6, -32(1)
; PPC64-NEXT: bc 12, 5, .LBB2_6
; PPC64-NEXT: # %bb.5: # %entry
; PPC64-NEXT: ori 4, 5, 0
; PPC64-NEXT: b .LBB2_6
; PPC64-NEXT: .LBB2_6: # %entry
; PPC64-NEXT: std 4, -24(1)
; PPC64-NEXT: bc 12, 0, .LBB2_8
; PPC64-NEXT: # %bb.7: # %entry
; PPC64-NEXT: lfd 0, -32(1)
; PPC64-NEXT: fcfid 0, 0
; PPC64-NEXT: frsp 1, 0
; PPC64-NEXT: blr
; PPC64-NEXT: .LBB2_8:
; PPC64-NEXT: lfd 0, -24(1)
; PPC64-NEXT: fcfid 0, 0
; PPC64-NEXT: frsp 0, 0
; PPC64-NEXT: fadds 1, 0, 0
; PPC64-NEXT: blr
;
; PWR9-LABEL: fooul:
; PWR9: # %bb.0: # %entry
; PWR9-NEXT: xsrdpiz 1, 1
; PWR9-NEXT: blr
entry:
%conv = fptoui float %X to i64
%conv1 = uitofp i64 %conv to float
ret float %conv1
}
; Function Attrs: nounwind readnone
define double @fooudl(double %X) #0 {
; FPCVT-LABEL: fooudl:
; FPCVT: # %bb.0: # %entry
; FPCVT-NEXT: friz 1, 1
; FPCVT-NEXT: blr
;
; PPC64-LABEL: fooudl:
; PPC64: # %bb.0: # %entry
; PPC64-NEXT: addis 3, 2, .LCPI3_0@toc@ha
; PPC64-NEXT: li 4, 1
; PPC64-NEXT: lfs 0, .LCPI3_0@toc@l(3)
; PPC64-NEXT: rldic 4, 4, 63, 0
; PPC64-NEXT: fsub 2, 1, 0
; PPC64-NEXT: fcmpu 0, 1, 0
; PPC64-NEXT: fctidz 2, 2
; PPC64-NEXT: stfd 2, -8(1)
; PPC64-NEXT: fctidz 2, 1
; PPC64-NEXT: stfd 2, -16(1)
; PPC64-NEXT: ld 3, -8(1)
; PPC64-NEXT: ld 5, -16(1)
; PPC64-NEXT: xor 3, 3, 4
; PPC64-NEXT: li 4, 1107
; PPC64-NEXT: rldic 4, 4, 52, 1
; PPC64-NEXT: bc 12, 0, .LBB3_1
; PPC64-NEXT: b .LBB3_2
; PPC64-NEXT: .LBB3_1: # %entry
; PPC64-NEXT: addi 3, 5, 0
; PPC64-NEXT: .LBB3_2: # %entry
; PPC64-NEXT: rldicl 5, 3, 32, 32
; PPC64-NEXT: clrldi 3, 3, 32
; PPC64-NEXT: or 4, 5, 4
; PPC64-NEXT: addis 5, 2, .LCPI3_1@toc@ha
; PPC64-NEXT: std 4, -24(1)
; PPC64-NEXT: li 4, 1075
; PPC64-NEXT: rldic 4, 4, 52, 1
; PPC64-NEXT: or 3, 3, 4
; PPC64-NEXT: lfd 0, .LCPI3_1@toc@l(5)
; PPC64-NEXT: std 3, -32(1)
; PPC64-NEXT: lfd 1, -24(1)
; PPC64-NEXT: lfd 2, -32(1)
; PPC64-NEXT: fsub 0, 1, 0
; PPC64-NEXT: fadd 1, 2, 0
; PPC64-NEXT: blr
;
; PWR9-LABEL: fooudl:
; PWR9: # %bb.0: # %entry
; PWR9-NEXT: xsrdpiz 1, 1
; PWR9-NEXT: blr
entry:
%conv = fptoui double %X to i64
%conv1 = uitofp i64 %conv to double
ret double %conv1
}
; Function Attrs: nounwind readnone
define i1 @f64_to_si1(double %X) #0 {
; FPCVT-LABEL: f64_to_si1:
; FPCVT: # %bb.0: # %entry
; FPCVT-NEXT: fctiwz 0, 1
; FPCVT-NEXT: addi 3, 1, -4
; FPCVT-NEXT: stfiwx 0, 0, 3
; FPCVT-NEXT: lwz 3, -4(1)
; FPCVT-NEXT: blr
;
; PPC64-LABEL: f64_to_si1:
; PPC64: # %bb.0: # %entry
; PPC64-NEXT: addi 3, 1, -4
; PPC64-NEXT: fctiwz 0, 1
; PPC64-NEXT: stfiwx 0, 0, 3
; PPC64-NEXT: lwz 3, -4(1)
; PPC64-NEXT: blr
;
; PWR9-LABEL: f64_to_si1:
; PWR9: # %bb.0: # %entry
; PWR9-NEXT: xscvdpsxws 0, 1
; PWR9-NEXT: mffprwz 3, 0
; PWR9-NEXT: blr
entry:
%conv = fptosi double %X to i1
ret i1 %conv
}
; Function Attrs: nounwind readnone
define i1 @f64_to_ui1(double %X) #0 {
; FPCVT-LABEL: f64_to_ui1:
; FPCVT: # %bb.0: # %entry
; FPCVT-NEXT: fctiwz 0, 1
; FPCVT-NEXT: addi 3, 1, -4
; FPCVT-NEXT: stfiwx 0, 0, 3
; FPCVT-NEXT: lwz 3, -4(1)
; FPCVT-NEXT: blr
;
; PPC64-LABEL: f64_to_ui1:
; PPC64: # %bb.0: # %entry
; PPC64-NEXT: addi 3, 1, -4
; PPC64-NEXT: fctiwz 0, 1
; PPC64-NEXT: stfiwx 0, 0, 3
; PPC64-NEXT: lwz 3, -4(1)
; PPC64-NEXT: blr
;
; PWR9-LABEL: f64_to_ui1:
; PWR9: # %bb.0: # %entry
; PWR9-NEXT: xscvdpsxws 0, 1
; PWR9-NEXT: mffprwz 3, 0
; PWR9-NEXT: blr
entry:
%conv = fptoui double %X to i1
ret i1 %conv
}
; Function Attrs: nounwind readnone
define double @si1_to_f64(i1 %X) #0 {
; FPCVT-LABEL: si1_to_f64:
; FPCVT: # %bb.0: # %entry
; FPCVT-NEXT: andi. 3, 3, 1
; FPCVT-NEXT: li 4, 0
; FPCVT-NEXT: li 3, -1
; FPCVT-NEXT: iselgt 3, 3, 4
; FPCVT-NEXT: addi 4, 1, -4
; FPCVT-NEXT: stw 3, -4(1)
; FPCVT-NEXT: lfiwax 0, 0, 4
; FPCVT-NEXT: fcfid 1, 0
; FPCVT-NEXT: blr
;
; PPC64-LABEL: si1_to_f64:
; PPC64: # %bb.0: # %entry
; PPC64-NEXT: andi. 3, 3, 1
; PPC64-NEXT: li 4, -1
; PPC64-NEXT: li 3, 0
; PPC64-NEXT: bc 12, 1, .LBB6_1
; PPC64-NEXT: b .LBB6_2
; PPC64-NEXT: .LBB6_1: # %entry
; PPC64-NEXT: addi 3, 4, 0
; PPC64-NEXT: .LBB6_2: # %entry
; PPC64-NEXT: std 3, -8(1)
; PPC64-NEXT: lfd 0, -8(1)
; PPC64-NEXT: fcfid 1, 0
; PPC64-NEXT: blr
;
; PWR9-LABEL: si1_to_f64:
; PWR9: # %bb.0: # %entry
; PWR9-NEXT: andi. 3, 3, 1
; PWR9-NEXT: li 3, 0
; PWR9-NEXT: li 4, -1
; PWR9-NEXT: iselgt 3, 4, 3
; PWR9-NEXT: mtfprwa 0, 3
; PWR9-NEXT: xscvsxddp 1, 0
; PWR9-NEXT: blr
entry:
%conv = sitofp i1 %X to double
ret double %conv
}
; Function Attrs: nounwind readnone
define double @ui1_to_f64(i1 %X) #0 {
; FPCVT-LABEL: ui1_to_f64:
; FPCVT: # %bb.0: # %entry
; FPCVT-NEXT: clrlwi 3, 3, 31
; FPCVT-NEXT: addi 4, 1, -4
; FPCVT-NEXT: stw 3, -4(1)
; FPCVT-NEXT: lfiwax 0, 0, 4
; FPCVT-NEXT: fcfid 1, 0
; FPCVT-NEXT: blr
;
; PPC64-LABEL: ui1_to_f64:
; PPC64: # %bb.0: # %entry
; PPC64-NEXT: clrldi 3, 3, 63
; PPC64-NEXT: std 3, -8(1)
; PPC64-NEXT: lfd 0, -8(1)
; PPC64-NEXT: fcfid 1, 0
; PPC64-NEXT: blr
;
; PWR9-LABEL: ui1_to_f64:
; PWR9: # %bb.0: # %entry
; PWR9-NEXT: clrlwi 3, 3, 31
; PWR9-NEXT: mtfprwa 0, 3
; PWR9-NEXT: xscvsxddp 1, 0
; PWR9-NEXT: blr
entry:
%conv = uitofp i1 %X to double
ret double %conv
}
attributes #0 = { nounwind readnone "no-signed-zeros-fp-math"="true" }