1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 4 2; Verify that we get the code sequence needed to avoid double-rounding. 3; Note that only parts of the sequence are checked for here, to allow 4; for minor code generation differences. 5; RUN: llc -verify-machineinstrs -mcpu=pwr7 -mattr=-fpcvt < %s | FileCheck %s 6; RUN: llc -verify-machineinstrs -mcpu=pwr7 -mattr=-fpcvt -mattr=-isel < %s | FileCheck %s --check-prefix=CHECK-NO-ISEL 7; Also check that with -enable-unsafe-fp-math we do not get that extra 8; code sequence. Simply verify that there is no "isel" present. 9; RUN: llc -verify-machineinstrs -mcpu=pwr7 -mattr=-fpcvt -enable-unsafe-fp-math < %s | FileCheck %s -check-prefix=CHECK-UNSAFE 10; CHECK-UNSAFE-NOT: isel 11target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v128:128:128-n32:64" 12target triple = "powerpc64-unknown-linux-gnu" 13 14define float @test(i64 %x) nounwind readnone { 15; Verify that we get the code sequence needed to avoid double-rounding. 16; Note that only parts of the sequence are checked for here, to allow 17; for minor code generation differences. 18; Also check that with -enable-unsafe-fp-math we do not get that extra 19; code sequence. Simply verify that there is no "isel" present. 20; RUN: llc -verify-machineinstrs -mcpu=pwr7 -mattr=-fpcvt -enable-unsafe-fp-math < %s | FileCheck %s -check-prefix=CHECK-UNSAFE 21; CHECK-LABEL: test: 22; CHECK: # %bb.0: # %entry 23; CHECK-NEXT: clrldi 4, 3, 53 24; CHECK-NEXT: sradi 5, 3, 53 25; CHECK-NEXT: addi 4, 4, 2047 26; CHECK-NEXT: addi 5, 5, 1 27; CHECK-NEXT: or 4, 4, 3 28; CHECK-NEXT: cmpldi 5, 1 29; CHECK-NEXT: rldicr 4, 4, 0, 52 30; CHECK-NEXT: iselgt 3, 4, 3 31; CHECK-NEXT: std 3, -8(1) 32; CHECK-NEXT: lfd 0, -8(1) 33; CHECK-NEXT: xscvsxddp 0, 0 34; CHECK-NEXT: frsp 1, 0 35; CHECK-NEXT: blr 36; 37; CHECK-NO-ISEL-LABEL: test: 38; CHECK-NO-ISEL: # %bb.0: # %entry 39; CHECK-NO-ISEL-NEXT: sradi 4, 3, 53 40; CHECK-NO-ISEL-NEXT: addi 4, 4, 1 41; CHECK-NO-ISEL-NEXT: cmpldi 4, 1 42; CHECK-NO-ISEL-NEXT: bc 4, 1, .LBB0_2 43; CHECK-NO-ISEL-NEXT: # %bb.1: 44; CHECK-NO-ISEL-NEXT: clrldi 4, 3, 53 45; CHECK-NO-ISEL-NEXT: addi 4, 4, 2047 46; CHECK-NO-ISEL-NEXT: or 3, 4, 3 47; CHECK-NO-ISEL-NEXT: rldicr 3, 3, 0, 52 48; CHECK-NO-ISEL-NEXT: .LBB0_2: # %entry 49; CHECK-NO-ISEL-NEXT: std 3, -8(1) 50; CHECK-NO-ISEL-NEXT: lfd 0, -8(1) 51; CHECK-NO-ISEL-NEXT: xscvsxddp 0, 0 52; CHECK-NO-ISEL-NEXT: frsp 1, 0 53; CHECK-NO-ISEL-NEXT: blr 54; 55; CHECK-UNSAFE-LABEL: test: 56; CHECK-UNSAFE: # %bb.0: # %entry 57; CHECK-UNSAFE-NEXT: std 3, -8(1) 58; CHECK-UNSAFE-NEXT: lfd 0, -8(1) 59; CHECK-UNSAFE-NEXT: xscvsxddp 0, 0 60; CHECK-UNSAFE-NEXT: frsp 1, 0 61; CHECK-UNSAFE-NEXT: blr 62 63entry: 64 %conv = sitofp i64 %x to float 65 ret float %conv 66} 67 68 69