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52 lines
1.1 KiB
LLVM
52 lines
1.1 KiB
LLVM
; RUN: llc < %s -mcpu=atom -march=x86-64 | FileCheck %s
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target triple = "x86_64-unknown-linux-gnu"
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; Additional tests for 64-bit divide bypass
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define i64 @Test_get_quotient(i64 %a, i64 %b) nounwind {
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; CHECK-LABEL: Test_get_quotient:
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; CHECK: movq %rdi, %rax
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; CHECK: orq %rsi, %rax
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; CHECK-NEXT: testq $-65536, %rax
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; CHECK-NEXT: je
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; CHECK: idivq
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; CHECK: ret
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; CHECK: divw
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; CHECK: ret
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%result = sdiv i64 %a, %b
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ret i64 %result
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}
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define i64 @Test_get_remainder(i64 %a, i64 %b) nounwind {
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; CHECK-LABEL: Test_get_remainder:
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; CHECK: movq %rdi, %rax
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; CHECK: orq %rsi, %rax
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; CHECK-NEXT: testq $-65536, %rax
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; CHECK-NEXT: je
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; CHECK: idivq
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; CHECK: ret
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; CHECK: divw
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; CHECK: ret
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%result = srem i64 %a, %b
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ret i64 %result
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}
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define i64 @Test_get_quotient_and_remainder(i64 %a, i64 %b) nounwind {
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; CHECK-LABEL: Test_get_quotient_and_remainder:
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; CHECK: movq %rdi, %rax
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; CHECK: orq %rsi, %rax
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; CHECK-NEXT: testq $-65536, %rax
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; CHECK-NEXT: je
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; CHECK: idivq
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; CHECK: divw
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; CHECK: addq
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; CHECK: ret
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; CHECK-NOT: idivq
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; CHECK-NOT: divw
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%resultdiv = sdiv i64 %a, %b
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%resultrem = srem i64 %a, %b
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%result = add i64 %resultdiv, %resultrem
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ret i64 %result
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}
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