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AArch64: Add baseline test for treating exp as known positive #167603

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Nov 12, 2025
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AArch64: Add baseline test for treating exp as known positive #167603

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92 changes: 92 additions & 0 deletions llvm/test/CodeGen/AArch64/frem-power2.ll
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Original file line number Diff line number Diff line change
Expand Up @@ -85,6 +85,96 @@ entry:
ret float %fmod
}

define float @frem2_exp(float %x) #0 {
; CHECK-SD-LABEL: frem2_exp:
; CHECK-SD: // %bb.0: // %entry
; CHECK-SD-NEXT: str x30, [sp, #-16]! // 8-byte Folded Spill
; CHECK-SD-NEXT: bl expf
; CHECK-SD-NEXT: fmov s1, #0.50000000
; CHECK-SD-NEXT: // kill: def $s0 killed $s0 def $q0
; CHECK-SD-NEXT: fmov s2, #-2.00000000
; CHECK-SD-NEXT: fmul s1, s0, s1
; CHECK-SD-NEXT: frintz s1, s1
; CHECK-SD-NEXT: fmadd s1, s1, s2, s0
; CHECK-SD-NEXT: mvni v2.4s, #128, lsl #24
; CHECK-SD-NEXT: bit v0.16b, v1.16b, v2.16b
; CHECK-SD-NEXT: // kill: def $s0 killed $s0 killed $q0
; CHECK-SD-NEXT: ldr x30, [sp], #16 // 8-byte Folded Reload
; CHECK-SD-NEXT: ret
;
; CHECK-GI-LABEL: frem2_exp:
; CHECK-GI: // %bb.0: // %entry
; CHECK-GI-NEXT: str x30, [sp, #-16]! // 8-byte Folded Spill
; CHECK-GI-NEXT: bl expf
; CHECK-GI-NEXT: fmov s1, #2.00000000
; CHECK-GI-NEXT: ldr x30, [sp], #16 // 8-byte Folded Reload
; CHECK-GI-NEXT: b fmodf
entry:
%a = tail call float @llvm.exp.f32(float %x)
%fmod = frem float %a, 2.0
ret float %fmod
}

define float @frem2_exp2(float %x) #0 {
; CHECK-SD-LABEL: frem2_exp2:
; CHECK-SD: // %bb.0: // %entry
; CHECK-SD-NEXT: str x30, [sp, #-16]! // 8-byte Folded Spill
; CHECK-SD-NEXT: bl exp2f
; CHECK-SD-NEXT: fmov s1, #0.50000000
; CHECK-SD-NEXT: // kill: def $s0 killed $s0 def $q0
; CHECK-SD-NEXT: fmov s2, #-2.00000000
; CHECK-SD-NEXT: fmul s1, s0, s1
; CHECK-SD-NEXT: frintz s1, s1
; CHECK-SD-NEXT: fmadd s1, s1, s2, s0
; CHECK-SD-NEXT: mvni v2.4s, #128, lsl #24
; CHECK-SD-NEXT: bit v0.16b, v1.16b, v2.16b
; CHECK-SD-NEXT: // kill: def $s0 killed $s0 killed $q0
; CHECK-SD-NEXT: ldr x30, [sp], #16 // 8-byte Folded Reload
; CHECK-SD-NEXT: ret
;
; CHECK-GI-LABEL: frem2_exp2:
; CHECK-GI: // %bb.0: // %entry
; CHECK-GI-NEXT: str x30, [sp, #-16]! // 8-byte Folded Spill
; CHECK-GI-NEXT: bl exp2f
; CHECK-GI-NEXT: fmov s1, #2.00000000
; CHECK-GI-NEXT: ldr x30, [sp], #16 // 8-byte Folded Reload
; CHECK-GI-NEXT: b fmodf
entry:
%a = tail call float @llvm.exp2.f32(float %x)
%fmod = frem float %a, 2.0
ret float %fmod
}

define float @frem2_exp10(float %x) #0 {
; CHECK-SD-LABEL: frem2_exp10:
; CHECK-SD: // %bb.0: // %entry
; CHECK-SD-NEXT: str x30, [sp, #-16]! // 8-byte Folded Spill
; CHECK-SD-NEXT: bl exp10f
; CHECK-SD-NEXT: fmov s1, #0.50000000
; CHECK-SD-NEXT: // kill: def $s0 killed $s0 def $q0
; CHECK-SD-NEXT: fmov s2, #-2.00000000
; CHECK-SD-NEXT: fmul s1, s0, s1
; CHECK-SD-NEXT: frintz s1, s1
; CHECK-SD-NEXT: fmadd s1, s1, s2, s0
; CHECK-SD-NEXT: mvni v2.4s, #128, lsl #24
; CHECK-SD-NEXT: bit v0.16b, v1.16b, v2.16b
; CHECK-SD-NEXT: // kill: def $s0 killed $s0 killed $q0
; CHECK-SD-NEXT: ldr x30, [sp], #16 // 8-byte Folded Reload
; CHECK-SD-NEXT: ret
;
; CHECK-GI-LABEL: frem2_exp10:
; CHECK-GI: // %bb.0: // %entry
; CHECK-GI-NEXT: str x30, [sp, #-16]! // 8-byte Folded Spill
; CHECK-GI-NEXT: bl exp10f
; CHECK-GI-NEXT: fmov s1, #2.00000000
; CHECK-GI-NEXT: ldr x30, [sp], #16 // 8-byte Folded Reload
; CHECK-GI-NEXT: b fmodf
entry:
%a = tail call float @llvm.exp10.f32(float %x)
%fmod = frem float %a, 2.0
ret float %fmod
}

define half @hrem2_nsz(half %x) {
; CHECK-SD-LABEL: hrem2_nsz:
; CHECK-SD: // %bb.0: // %entry
Expand Down Expand Up @@ -630,3 +720,5 @@ entry:
%fmod = frem float -12.50, %y
ret float %fmod
}

attributes #0 = { nounwind }
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