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https://github.com/c64scene-ar/llvm-6502.git
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a066ed09db
addl has higher throughput and this was needlessly picking a suboptimal encoding causing PR23098. I wish there was a way of doing this without further duplicating tbl- generated patterns, but so far I haven't found one. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@233832 91177308-0d34-0410-b5e6-96231b3b80d8
125 lines
2.4 KiB
LLVM
125 lines
2.4 KiB
LLVM
; RUN: llc < %s -march=x86-64 | FileCheck %s
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; PR5039
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define i32 @test1(i32 %x) nounwind {
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%and = shl i32 %x, 10
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%shl = and i32 %and, 31744
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ret i32 %shl
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; CHECK-LABEL: test1:
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; CHECK: andl $31
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; CHECK: shll $10
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}
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define i32 @test2(i32 %x) nounwind {
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%or = shl i32 %x, 10
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%shl = or i32 %or, 31744
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ret i32 %shl
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; CHECK-LABEL: test2:
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; CHECK: orl $31
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; CHECK: shll $10
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}
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define i32 @test3(i32 %x) nounwind {
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%xor = shl i32 %x, 10
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%shl = xor i32 %xor, 31744
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ret i32 %shl
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; CHECK-LABEL: test3:
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; CHECK: xorl $31
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; CHECK: shll $10
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}
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define i64 @test4(i64 %x) nounwind {
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%and = shl i64 %x, 40
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%shl = and i64 %and, 264982302294016
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ret i64 %shl
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; CHECK-LABEL: test4:
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; CHECK: andq $241
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; CHECK: shlq $40
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}
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define i64 @test5(i64 %x) nounwind {
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%and = shl i64 %x, 40
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%shl = and i64 %and, 34084860461056
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ret i64 %shl
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; CHECK-LABEL: test5:
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; CHECK: andq $31
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; CHECK: shlq $40
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}
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define i64 @test6(i64 %x) nounwind {
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%and = shl i64 %x, 32
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%shl = and i64 %and, -281474976710656
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ret i64 %shl
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; CHECK-LABEL: test6:
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; CHECK: andq $-65536
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; CHECK: shlq $32
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}
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define i64 @test7(i64 %x) nounwind {
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%or = shl i64 %x, 40
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%shl = or i64 %or, 264982302294016
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ret i64 %shl
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; CHECK-LABEL: test7:
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; CHECK: orq $241
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; CHECK: shlq $40
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}
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define i64 @test8(i64 %x) nounwind {
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%or = shl i64 %x, 40
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%shl = or i64 %or, 34084860461056
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ret i64 %shl
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; CHECK-LABEL: test8:
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; CHECK: orq $31
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; CHECK: shlq $40
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}
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define i64 @test9(i64 %x) nounwind {
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%xor = shl i64 %x, 40
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%shl = xor i64 %xor, 264982302294016
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ret i64 %shl
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; CHECK-LABEL: test9:
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; CHECK: orq $241
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; CHECK: shlq $40
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}
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define i64 @test10(i64 %x) nounwind {
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%xor = shl i64 %x, 40
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%shl = xor i64 %xor, 34084860461056
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ret i64 %shl
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; CHECK-LABEL: test10:
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; CHECK: xorq $31
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; CHECK: shlq $40
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}
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define i64 @test11(i64 %x) nounwind {
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%xor = shl i64 %x, 33
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%shl = xor i64 %xor, -562949953421312
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ret i64 %shl
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; CHECK-LABEL: test11:
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; CHECK: xorq $-65536
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; CHECK: shlq $33
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}
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; PR23098
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define i32 @test12(i32 %x, i32* %y) nounwind {
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%and = shl i32 %x, 1
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%shl = and i32 %and, 255
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store i32 %shl, i32* %y
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ret i32 %shl
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; CHECK-LABEL: test12:
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; CHECK: andl $127
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; CHECK-NEXT: addl
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; CHECK-NOT: shl
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}
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define i64 @test13(i64 %x, i64* %y) nounwind {
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%and = shl i64 %x, 1
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%shl = and i64 %and, 255
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store i64 %shl, i64* %y
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ret i64 %shl
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; CHECK-LABEL: test13:
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; CHECK: andq $127
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; CHECK-NEXT: addq
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; CHECK-NOT: shl
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}
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