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[mips] Fix a typo in the compare patterns for MIPS32r6/MIPS64r6.

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Summary: The patterns intended for the SETLE node were actually matching the SETLT node.

Reviewers: atanasyan, sstankovic, vmedic

Reviewed By: vmedic

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D6997

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@226171 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Daniel Sanders 2015-01-15 15:41:03 +00:00
parent add8f51c26
commit cb71ef1b46
2 changed files with 92 additions and 2 deletions
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4
lib/Target/Mips/Mips32r6InstrInfo.td
View File

@ -756,7 +756,7 @@ def : MipsPat<(setge f32:$lhs, f32:$rhs), (CMP_LT_S f32:$rhs, f32:$lhs)>,
ISA_MIPS32R6;
def : MipsPat<(setlt f32:$lhs, f32:$rhs), (CMP_LT_S f32:$lhs, f32:$rhs)>,
ISA_MIPS32R6;
def : MipsPat<(setlt f32:$lhs, f32:$rhs), (CMP_LE_S f32:$lhs, f32:$rhs)>,
def : MipsPat<(setle f32:$lhs, f32:$rhs), (CMP_LE_S f32:$lhs, f32:$rhs)>,
ISA_MIPS32R6;
def : MipsPat<(setne f32:$lhs, f32:$rhs),
(NOR (CMP_EQ_S f32:$lhs, f32:$rhs), ZERO)>, ISA_MIPS32R6;
@ -776,7 +776,7 @@ def : MipsPat<(setge f64:$lhs, f64:$rhs), (CMP_LT_D f64:$rhs, f64:$lhs)>,
ISA_MIPS32R6;
def : MipsPat<(setlt f64:$lhs, f64:$rhs), (CMP_LT_D f64:$lhs, f64:$rhs)>,
ISA_MIPS32R6;
def : MipsPat<(setlt f64:$lhs, f64:$rhs), (CMP_LE_D f64:$lhs, f64:$rhs)>,
def : MipsPat<(setle f64:$lhs, f64:$rhs), (CMP_LE_D f64:$lhs, f64:$rhs)>,
ISA_MIPS32R6;
def : MipsPat<(setne f64:$lhs, f64:$rhs),
(NOR (CMP_EQ_D f64:$lhs, f64:$rhs), ZERO)>, ISA_MIPS32R6;

90
test/CodeGen/Mips/fcmp.ll
View File

@ -781,3 +781,93 @@ define i32 @true_f64(double %a, double %b) nounwind {
%2 = zext i1 %1 to i32
ret i32 %2
}
; The optimizers sometimes produce setlt instead of setolt/setult.
define float @bug1_f32(float %angle, float %at) #0 {
entry:
; ALL-LABEL: bug1_f32:
; 32-C-DAG: add.s $[[T0:f[0-9]+]], $f14, $f12
; 32-C-DAG: lwc1 $[[T1:f[0-9]+]], %lo($CPI32_0)(
; 32-C-DAG: c.ole.s $[[T0]], $[[T1]]
; 32-C-DAG: bc1t
; 32-CMP-DAG: add.s $[[T0:f[0-9]+]], $f14, $f12
; 32-CMP-DAG: lwc1 $[[T1:f[0-9]+]], %lo($CPI32_0)(
; 32-CMP-DAG: cmp.le.s $[[T2:f[0-9]+]], $[[T0]], $[[T1]]
; 32-CMP-DAG: mfc1 $[[T3:[0-9]+]], $[[T2]]
; FIXME: This instruction is redundant.
; 32-CMP-DAG: andi $[[T4:[0-9]+]], $[[T3]], 1
; 32-CMP-DAG: bnez $[[T4]],
; 64-C-DAG: add.s $[[T0:f[0-9]+]], $f13, $f12
; 64-C-DAG: lwc1 $[[T1:f[0-9]+]], %got_ofst($CPI32_0)(
; 64-C-DAG: c.ole.s $[[T0]], $[[T1]]
; 64-C-DAG: bc1t
; 64-CMP-DAG: add.s $[[T0:f[0-9]+]], $f13, $f12
; 64-CMP-DAG: lwc1 $[[T1:f[0-9]+]], %got_ofst($CPI32_0)(
; 64-CMP-DAG: cmp.le.s $[[T2:f[0-9]+]], $[[T0]], $[[T1]]
; 64-CMP-DAG: mfc1 $[[T3:[0-9]+]], $[[T2]]
; FIXME: This instruction is redundant.
; 64-CMP-DAG: andi $[[T4:[0-9]+]], $[[T3]], 1
; 64-CMP-DAG: bnez $[[T4]],
%add = fadd fast float %at, %angle
%cmp = fcmp ogt float %add, 1.000000e+00
br i1 %cmp, label %if.then, label %if.end
if.then:
%sub = fadd fast float %add, -1.000000e+00
br label %if.end
if.end:
%theta.0 = phi float [ %sub, %if.then ], [ %add, %entry ]
ret float %theta.0
}
; The optimizers sometimes produce setlt instead of setolt/setult.
define double @bug1_f64(double %angle, double %at) #0 {
entry:
; ALL-LABEL: bug1_f64:
; 32-C-DAG: add.d $[[T0:f[0-9]+]], $f14, $f12
; 32-C-DAG: ldc1 $[[T1:f[0-9]+]], %lo($CPI33_0)(
; 32-C-DAG: c.ole.d $[[T0]], $[[T1]]
; 32-C-DAG: bc1t
; 32-CMP-DAG: add.d $[[T0:f[0-9]+]], $f14, $f12
; 32-CMP-DAG: ldc1 $[[T1:f[0-9]+]], %lo($CPI33_0)(
; 32-CMP-DAG: cmp.le.d $[[T2:f[0-9]+]], $[[T0]], $[[T1]]
; 32-CMP-DAG: mfc1 $[[T3:[0-9]+]], $[[T2]]
; FIXME: This instruction is redundant.
; 32-CMP-DAG: andi $[[T4:[0-9]+]], $[[T3]], 1
; 32-CMP-DAG: bnez $[[T4]],
; 64-C-DAG: add.d $[[T0:f[0-9]+]], $f13, $f12
; 64-C-DAG: ldc1 $[[T1:f[0-9]+]], %got_ofst($CPI33_0)(
; 64-C-DAG: c.ole.d $[[T0]], $[[T1]]
; 64-C-DAG: bc1t
; 64-CMP-DAG: add.d $[[T0:f[0-9]+]], $f13, $f12
; 64-CMP-DAG: ldc1 $[[T1:f[0-9]+]], %got_ofst($CPI33_0)(
; 64-CMP-DAG: cmp.le.d $[[T2:f[0-9]+]], $[[T0]], $[[T1]]
; 64-CMP-DAG: mfc1 $[[T3:[0-9]+]], $[[T2]]
; FIXME: This instruction is redundant.
; 64-CMP-DAG: andi $[[T4:[0-9]+]], $[[T3]], 1
; 64-CMP-DAG: bnez $[[T4]],
%add = fadd fast double %at, %angle
%cmp = fcmp ogt double %add, 1.000000e+00
br i1 %cmp, label %if.then, label %if.end
if.then:
%sub = fadd fast double %add, -1.000000e+00
br label %if.end
if.end:
%theta.0 = phi double [ %sub, %if.then ], [ %add, %entry ]
ret double %theta.0
}
attributes #0 = { nounwind readnone "no-nans-fp-math"="true" }