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Diffstat (limited to 'test/CodeGen/X86/slow-div.ll')
| -rw-r--r-- | test/CodeGen/X86/slow-div.ll | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/test/CodeGen/X86/slow-div.ll b/test/CodeGen/X86/slow-div.ll new file mode 100644 index 0000000..5222382 --- /dev/null +++ b/test/CodeGen/X86/slow-div.ll @@ -0,0 +1,28 @@ +; RUN: llc -mtriple=x86_64-unknown-linux-gnu -mattr=+idivl-to-divb < %s | FileCheck -check-prefix=DIV32 %s +; RUN: llc -mtriple=x86_64-unknown-linux-gnu -mattr=+idivq-to-divw < %s | FileCheck -check-prefix=DIV64 %s + +define i32 @div32(i32 %a, i32 %b) { +entry: +; DIV32-LABEL: div32: +; DIV32: orl %{{.*}}, [[REG:%[a-z]+]] +; DIV32: testl $-256, [[REG]] +; DIV32: divb +; DIV64-LABEL: div32: +; DIV64-NOT: divb + %div = sdiv i32 %a, %b + ret i32 %div +} + +define i64 @div64(i64 %a, i64 %b) { +entry: +; DIV32-LABEL: div64: +; DIV32-NOT: divw +; DIV64-LABEL: div64: +; DIV64: orq %{{.*}}, [[REG:%[a-z]+]] +; DIV64: testq $-65536, [[REG]] +; DIV64: divw + %div = sdiv i64 %a, %b + ret i64 %div +} + + |