3 Commits

Author	SHA1	Message	Date
Michael Kuperstein	77ce9d3b1a	[X86] Always generate precise CFA adjustments. ... This removes the code path that generate "synchronous" (only correct at call site) CFA. We will probably want to re-introduce it once we are capable of emitting different .eh_frame and .debug_frame sections. Differential Revision: http://reviews.llvm.org/D14948 llvm-svn: 254874	2015-12-06 13:06:20 +00:00
Hans Wennborg	dcc2500452	X86: More efficient legalization of wide integer compares ... In particular, this makes the code for 64-bit compares on 32-bit targets much more efficient. Example: define i32 @test_slt(i64 %a, i64 %b) { entry: %cmp = icmp slt i64 %a, %b br i1 %cmp, label %bb1, label %bb2 bb1: ret i32 1 bb2: ret i32 2 } Before this patch: test_slt: movl 4(%esp), %eax movl 8(%esp), %ecx cmpl 12(%esp), %eax setae %al cmpl 16(%esp), %ecx setge %cl je .LBB2_2 movb %cl, %al .LBB2_2: testb %al, %al jne .LBB2_4 movl $1, %eax retl .LBB2_4: movl $2, %eax retl After this patch: test_slt: movl 4(%esp), %eax movl 8(%esp), %ecx cmpl 12(%esp), %eax sbbl 16(%esp), %ecx jge .LBB1_2 movl $1, %eax retl .LBB1_2: movl $2, %eax retl Differential Revision: http://reviews.llvm.org/D14496 llvm-svn: 253572	2015-11-19 16:35:08 +00:00
Rafael Espindola	26cfbea738	Compute the correct jump table entries on 32 bit windows. ... On 32 bit windows we use label differences and .set does not suppress rolocations, a combination that was not used before r220256. This fixes PR21497. llvm-svn: 221456	2014-11-06 14:39:49 +00:00