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llvm-mirror/test/CodeGen/X86/fast-isel-divrem-x86-64.ll

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X86: use sub-register sequences for MOV*r0 operations Instead of having a bunch of separate MOV8r0, MOV16r0, ... pseudo-instructions, it's better to use a single MOV32r0 (which will expand to "xorl %reg, %reg") and obtain other sizes with EXTRACT_SUBREG and SUBREG_TO_REG. The encoding is smaller and partial register updates can sometimes be avoided. Until recently, this sequence was a barrier to rematerialization though. That should now be fixed so it's an appropriate time to make the change. llvm-svn: 182928
2013-05-30 15:19:42 +02:00
; RUN: llc -mtriple=x86_64-none-linux -fast-isel -fast-isel-abort -verify-machineinstrs < %s | FileCheck %s
This patch teaches x86 fast-isel to generate the native div/idiv instructions for the sdiv/srem/udiv/urem bitcode instructions. This is done for the i8, i16, and i32 types, as well as i64 for the x86_64 target. Patch by Jim Stichnoth llvm-svn: 179715
2013-04-17 22:10:13 +02:00
define i64 @test_sdiv64(i64 %dividend, i64 %divisor) nounwind {
entry:
%result = sdiv i64 %dividend, %divisor
ret i64 %result
}
Convert CodeGen/*/*.ll tests to use the new CHECK-LABEL for easier debugging. No functionality change and all tests pass after conversion. This was done with the following sed invocation to catch label lines demarking function boundaries: sed -i '' "s/^;\( *\)\([A-Z0-9_]*\):\( *\)test\([A-Za-z0-9_-]*\):\( *\)$/;\1\2-LABEL:\3test\4:\5/g" test/CodeGen/*/*.ll which was written conservatively to avoid false positives rather than false negatives. I scanned through all the changes and everything looks correct. llvm-svn: 186258
2013-07-13 22:38:47 +02:00
; CHECK-LABEL: test_sdiv64:
This patch teaches x86 fast-isel to generate the native div/idiv instructions for the sdiv/srem/udiv/urem bitcode instructions. This is done for the i8, i16, and i32 types, as well as i64 for the x86_64 target. Patch by Jim Stichnoth llvm-svn: 179715
2013-04-17 22:10:13 +02:00
; CHECK: cqto
; CHECK: idivq
define i64 @test_srem64(i64 %dividend, i64 %divisor) nounwind {
entry:
%result = srem i64 %dividend, %divisor
ret i64 %result
}
Convert CodeGen/*/*.ll tests to use the new CHECK-LABEL for easier debugging. No functionality change and all tests pass after conversion. This was done with the following sed invocation to catch label lines demarking function boundaries: sed -i '' "s/^;\( *\)\([A-Z0-9_]*\):\( *\)test\([A-Za-z0-9_-]*\):\( *\)$/;\1\2-LABEL:\3test\4:\5/g" test/CodeGen/*/*.ll which was written conservatively to avoid false positives rather than false negatives. I scanned through all the changes and everything looks correct. llvm-svn: 186258
2013-07-13 22:38:47 +02:00
; CHECK-LABEL: test_srem64:
This patch teaches x86 fast-isel to generate the native div/idiv instructions for the sdiv/srem/udiv/urem bitcode instructions. This is done for the i8, i16, and i32 types, as well as i64 for the x86_64 target. Patch by Jim Stichnoth llvm-svn: 179715
2013-04-17 22:10:13 +02:00
; CHECK: cqto
; CHECK: idivq
define i64 @test_udiv64(i64 %dividend, i64 %divisor) nounwind {
entry:
%result = udiv i64 %dividend, %divisor
ret i64 %result
}
Convert CodeGen/*/*.ll tests to use the new CHECK-LABEL for easier debugging. No functionality change and all tests pass after conversion. This was done with the following sed invocation to catch label lines demarking function boundaries: sed -i '' "s/^;\( *\)\([A-Z0-9_]*\):\( *\)test\([A-Za-z0-9_-]*\):\( *\)$/;\1\2-LABEL:\3test\4:\5/g" test/CodeGen/*/*.ll which was written conservatively to avoid false positives rather than false negatives. I scanned through all the changes and everything looks correct. llvm-svn: 186258
2013-07-13 22:38:47 +02:00
; CHECK-LABEL: test_udiv64:
This patch teaches x86 fast-isel to generate the native div/idiv instructions for the sdiv/srem/udiv/urem bitcode instructions. This is done for the i8, i16, and i32 types, as well as i64 for the x86_64 target. Patch by Jim Stichnoth llvm-svn: 179715
2013-04-17 22:10:13 +02:00
; CHECK: xorl
; CHECK: divq
define i64 @test_urem64(i64 %dividend, i64 %divisor) nounwind {
entry:
%result = urem i64 %dividend, %divisor
ret i64 %result
}
Convert CodeGen/*/*.ll tests to use the new CHECK-LABEL for easier debugging. No functionality change and all tests pass after conversion. This was done with the following sed invocation to catch label lines demarking function boundaries: sed -i '' "s/^;\( *\)\([A-Z0-9_]*\):\( *\)test\([A-Za-z0-9_-]*\):\( *\)$/;\1\2-LABEL:\3test\4:\5/g" test/CodeGen/*/*.ll which was written conservatively to avoid false positives rather than false negatives. I scanned through all the changes and everything looks correct. llvm-svn: 186258
2013-07-13 22:38:47 +02:00
; CHECK-LABEL: test_urem64:
This patch teaches x86 fast-isel to generate the native div/idiv instructions for the sdiv/srem/udiv/urem bitcode instructions. This is done for the i8, i16, and i32 types, as well as i64 for the x86_64 target. Patch by Jim Stichnoth llvm-svn: 179715
2013-04-17 22:10:13 +02:00
; CHECK: xorl
; CHECK: divq
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