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| author | Stefan Maksimovic <stefan.maksimovic@mips.com> | 2017-12-13 10:13:35 +0000 |
|---|---|---|
| committer | Stefan Maksimovic <stefan.maksimovic@mips.com> | 2017-12-13 10:13:35 +0000 |
| commit | 0a075d68ecd2e5c3cbf220557621a3753306698f (patch) | |
| tree | 6bb572e98843b9f5d8a373fbc4b0e80c7907b07f /llvm/test/CodeGen/Mips | |
| parent | 56c2d9997901d28e7aba84c74ecc8c49021d088c (diff) | |
| download | bcm5719-llvm-0a075d68ecd2e5c3cbf220557621a3753306698f.tar.gz bcm5719-llvm-0a075d68ecd2e5c3cbf220557621a3753306698f.zip | |
[mips] Provide additional DSP bitconvert patterns
Previously, v2i16 -> f32 bitcast could not be matched.
Add patterns to support matching this and similar types of bitcasts.
Differential revision: https://reviews.llvm.org/D40959
llvm-svn: 320562
Diffstat (limited to 'llvm/test/CodeGen/Mips')
| -rw-r--r-- | llvm/test/CodeGen/Mips/v2i16tof32.ll | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/llvm/test/CodeGen/Mips/v2i16tof32.ll b/llvm/test/CodeGen/Mips/v2i16tof32.ll new file mode 100644 index 00000000000..7e5591ee9cb --- /dev/null +++ b/llvm/test/CodeGen/Mips/v2i16tof32.ll @@ -0,0 +1,47 @@ +; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py +; RUN: llc < %s -O2 -mtriple mipsel--linux-android -mattr=+dsp -verify-machineinstrs | FileCheck %s + +; Function below generates a v2i16 to f32 bitcast. +; Test that we are able to match it. + +define float @f(<8 x i16>* %a) { +; CHECK-LABEL: f: +; CHECK: # %bb.0: # %entry +; CHECK-NEXT: addiu $sp, $sp, -32 +; CHECK-NEXT: .cfi_def_cfa_offset 32 +; CHECK-NEXT: sw $fp, 28($sp) # 4-byte Folded Spill +; CHECK-NEXT: .cfi_offset 30, -4 +; CHECK-NEXT: move $fp, $sp +; CHECK-NEXT: .cfi_def_cfa_register 30 +; CHECK-NEXT: addiu $1, $zero, -16 +; CHECK-NEXT: and $sp, $sp, $1 +; CHECK-NEXT: lw $1, 8($4) +; CHECK-NEXT: lw $2, 4($4) +; CHECK-NEXT: lw $3, 12($4) +; CHECK-NEXT: sw $3, 12($sp) +; CHECK-NEXT: sw $1, 8($sp) +; CHECK-NEXT: sw $2, 4($sp) +; CHECK-NEXT: lw $1, 0($4) +; CHECK-NEXT: sw $1, 0($sp) +; CHECK-NEXT: mtc1 $1, $f0 +; CHECK-NEXT: move $sp, $fp +; CHECK-NEXT: lw $fp, 28($sp) # 4-byte Folded Reload +; CHECK-NEXT: jr $ra +; CHECK-NEXT: addiu $sp, $sp, 32 +; CHECK-NEXT: .set at +; CHECK-NEXT: .set macro +; CHECK-NEXT: .set reorder +; CHECK-NEXT: .end f +entry: + %m = alloca <8 x i16> + %0 = load <8 x i16>, <8 x i16>* %a + store <8 x i16> %0, <8 x i16>* %m + %1 = bitcast <8 x i16> %0 to <4 x float> + %2 = shufflevector <4 x float> %1, <4 x float> undef, <8 x i32> <i32 0, i32 3, i32 2, i32 3, i32 undef, i32 undef, i32 undef, i32 undef> + %3 = shufflevector <8 x float> zeroinitializer, <8 x float> %2, <8 x i32> <i32 8, i32 9, i32 10, i32 11, i32 4, i32 5, i32 6, i32 7> + %4 = bitcast <8 x float> %3 to <8 x i32> + %5 = extractelement <8 x i32> %4, i32 0 + %6 = bitcast i32 %5 to float + ret float %6 +} + |
