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https://github.com/c64scene-ar/llvm-6502.git
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64 lines
1.4 KiB
LLVM
64 lines
1.4 KiB
LLVM
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; Test three-operand shifts.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z196 | FileCheck %s
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; Check that we use SLLK over SLL where useful.
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define i32 @f1(i32 %a, i32 %b, i32 %amt) {
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; CHECK-LABEL: f1:
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; CHECK: sllk %r2, %r3, 15(%r4)
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; CHECK: br %r14
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%add = add i32 %amt, 15
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%shift = shl i32 %b, %add
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ret i32 %shift
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}
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; Check that we use SLL over SLLK where possible.
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define i32 @f2(i32 %a, i32 %amt) {
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; CHECK-LABEL: f2:
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; CHECK: sll %r2, 15(%r3)
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; CHECK: br %r14
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%add = add i32 %amt, 15
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%shift = shl i32 %a, %add
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ret i32 %shift
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}
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; Check that we use SRLK over SRL where useful.
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define i32 @f3(i32 %a, i32 %b, i32 %amt) {
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; CHECK-LABEL: f3:
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; CHECK: srlk %r2, %r3, 15(%r4)
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; CHECK: br %r14
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%add = add i32 %amt, 15
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%shift = lshr i32 %b, %add
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ret i32 %shift
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}
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; Check that we use SRL over SRLK where possible.
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define i32 @f4(i32 %a, i32 %amt) {
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; CHECK-LABEL: f4:
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; CHECK: srl %r2, 15(%r3)
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; CHECK: br %r14
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%add = add i32 %amt, 15
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%shift = lshr i32 %a, %add
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ret i32 %shift
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}
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; Check that we use SRAK over SRA where useful.
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define i32 @f5(i32 %a, i32 %b, i32 %amt) {
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; CHECK-LABEL: f5:
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; CHECK: srak %r2, %r3, 15(%r4)
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; CHECK: br %r14
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%add = add i32 %amt, 15
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%shift = ashr i32 %b, %add
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ret i32 %shift
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}
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; Check that we use SRA over SRAK where possible.
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define i32 @f6(i32 %a, i32 %amt) {
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; CHECK-LABEL: f6:
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; CHECK: sra %r2, 15(%r3)
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; CHECK: br %r14
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%add = add i32 %amt, 15
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%shift = ashr i32 %a, %add
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ret i32 %shift
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}
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