; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py ; RUN: llc -mtriple=aarch64 < %s | FileCheck %s ; This should codegen to fmaxnm with no-signed-zeros. define float @fmaxnm(i32 %i1, i32 %i2) #0 { ; CHECK-LABEL: fmaxnm: ; CHECK: // %bb.0: ; CHECK-NEXT: ucvtf s0, w0 ; CHECK-NEXT: fmov s1, #11.00000000 ; CHECK-NEXT: ucvtf s2, w1 ; CHECK-NEXT: fmov s3, #17.00000000 ; CHECK-NEXT: fadd s0, s0, s1 ; CHECK-NEXT: fadd s1, s2, s3 ; CHECK-NEXT: fcmp s0, s1 ; CHECK-NEXT: fcsel s0, s0, s1, pl ; CHECK-NEXT: ret %f1 = uitofp i32 %i1 to float %fadd1 = fadd float %f1, 11.0 %f2 = uitofp i32 %i2 to float %fadd2 = fadd float %f2, 17.0 %cmp = fcmp uge float %fadd1, %fadd2 %val = select i1 %cmp, float %fadd1, float %fadd2 ret float %val } ; If f1 is 0, fmul is NaN because 0.0 * -INF = NaN ; Therefore, this is not fmaxnm. define float @not_fmaxnm_maybe_nan(i32 %i1, i32 %i2) #0 { ; CHECK-LABEL: not_fmaxnm_maybe_nan: ; CHECK: // %bb.0: ; CHECK-NEXT: mov w8, #-8388608 ; CHECK-NEXT: ucvtf s0, w0 ; CHECK-NEXT: ucvtf s1, w1 ; CHECK-NEXT: fmov s2, #17.00000000 ; CHECK-NEXT: fmov s3, w8 ; CHECK-NEXT: fmul s0, s0, s3 ; CHECK-NEXT: fadd s1, s1, s2 ; CHECK-NEXT: fcmp s0, s1 ; CHECK-NEXT: fcsel s0, s0, s1, pl ; CHECK-NEXT: ret %f1 = uitofp i32 %i1 to float %fmul = fmul float %f1, 0xfff0000000000000 ; -INFINITY as 64-bit hex %f2 = uitofp i32 %i2 to float %fadd2 = fadd float %f2, 17.0 %cmp = fcmp uge float %fmul, %fadd2 %val = select i1 %cmp, float %fmul, float %fadd2 ret float %val } attributes #0 = { "no-signed-zeros-fp-math"="true" }