[llvm] 9372f40 - [LoongArch] Pre-commit for optimizing bitcast extracted fp elements. NFC

[Qi Zhao via llvm-commits]

Author: Qi Zhao
Date: 2025-07-05T14:12:39+08:00
New Revision: 9372f4050a94ffe54d02f70440d2f52341ddbe45

URL: https://github.com/llvm/llvm-project/commit/9372f4050a94ffe54d02f70440d2f52341ddbe45
DIFF: https://github.com/llvm/llvm-project/commit/9372f4050a94ffe54d02f70440d2f52341ddbe45.diff

LOG: [LoongArch] Pre-commit for optimizing bitcast extracted fp elements. NFC

Added: 
    llvm/test/CodeGen/LoongArch/lasx/ir-instruction/bitcast-extract-element.ll
    llvm/test/CodeGen/LoongArch/lsx/ir-instruction/bitcast-extract-element.ll

Modified: 
    

Removed: 
    


################################################################################
diff  --git a/llvm/test/CodeGen/LoongArch/lasx/ir-instruction/bitcast-extract-element.ll b/llvm/test/CodeGen/LoongArch/lasx/ir-instruction/bitcast-extract-element.ll
new file mode 100644
index 0000000000000..86808c7a8f014
--- /dev/null
+++ b/llvm/test/CodeGen/LoongArch/lasx/ir-instruction/bitcast-extract-element.ll
@@ -0,0 +1,28 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc --mtriple=loongarch64 --mattr=+lasx < %s | FileCheck %s
+
+define i32 @bitcast_extract_v8f32(<8 x float> %a) nounwind {
+; CHECK-LABEL: bitcast_extract_v8f32:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    xvpickve2gr.w $a0, $xr0, 7
+; CHECK-NEXT:    movgr2fr.w $fa0, $a0
+; CHECK-NEXT:    movfr2gr.s $a0, $fa0
+; CHECK-NEXT:    ret
+entry:
+  %b = extractelement <8 x float> %a, i32 7
+  %c = bitcast float %b to i32
+  ret i32 %c
+}
+
+define i64 @bitcast_extract_v4f64(<4 x double> %a) nounwind {
+; CHECK-LABEL: bitcast_extract_v4f64:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    xvpickve2gr.d $a0, $xr0, 3
+; CHECK-NEXT:    movgr2fr.d $fa0, $a0
+; CHECK-NEXT:    movfr2gr.d $a0, $fa0
+; CHECK-NEXT:    ret
+entry:
+  %b = extractelement <4 x double> %a, i32 3
+  %c = bitcast double %b to i64
+  ret i64 %c
+}

diff  --git a/llvm/test/CodeGen/LoongArch/lsx/ir-instruction/bitcast-extract-element.ll b/llvm/test/CodeGen/LoongArch/lsx/ir-instruction/bitcast-extract-element.ll
new file mode 100644
index 0000000000000..df4896d7ec936
--- /dev/null
+++ b/llvm/test/CodeGen/LoongArch/lsx/ir-instruction/bitcast-extract-element.ll
@@ -0,0 +1,26 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
+; RUN: llc --mtriple=loongarch64 --mattr=+lsx < %s | FileCheck %s
+
+define i32 @bitcast_extract_v4f32(<4 x float> %a) nounwind {
+; CHECK-LABEL: bitcast_extract_v4f32:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    vreplvei.w $vr0, $vr0, 3
+; CHECK-NEXT:    movfr2gr.s $a0, $fa0
+; CHECK-NEXT:    ret
+entry:
+  %b = extractelement <4 x float> %a, i32 3
+  %c = bitcast float %b to i32
+  ret i32 %c
+}
+
+define i64 @bitcast_extract_v2f64(<2 x double> %a) nounwind {
+; CHECK-LABEL: bitcast_extract_v2f64:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    vreplvei.d $vr0, $vr0, 1
+; CHECK-NEXT:    movfr2gr.d $a0, $fa0
+; CHECK-NEXT:    ret
+entry:
+  %b = extractelement <2 x double> %a, i32 1
+  %c = bitcast double %b to i64
+  ret i64 %c
+}