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llvm-project/llvm/test/CodeGen/X86/win32-pic-jumptable.ll

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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 22:39:49 +08:00
; RUN: llc < %s -relocation-model=pic | FileCheck %s
; CHECK: calll L0$pb
MCStreamer: Use "cfi" for CFI related temp labels. Choosing a "cfi" name makes the intend a bit clearer in an assembly dump and more importantly the assembly dumps are slightly more stable as the numbers don't move around anymore when unrelated code calls createTempSymbol() more or less often. As they are temp labels the name doesn't influence the generated object code. Differential Revision: https://reviews.llvm.org/D27244 llvm-svn: 288290
2016-12-01 07:48:26 +08:00
; CHECK-NEXT: Lcfi{{[0-9]+}}:
[X86] Always generate precise CFA adjustments. This removes the code path that generate "synchronous" (only correct at call site) CFA. We will probably want to re-introduce it once we are capable of emitting different .eh_frame and .debug_frame sections. Differential Revision: http://reviews.llvm.org/D14948 llvm-svn: 254874
2015-12-06 21:06:20 +08:00
; CHECK-NEXT: .cfi_adjust_cfa_offset 4
Compute the correct jump table entries on 32 bit windows. On 32 bit windows we use label differences and .set does not suppress rolocations, a combination that was not used before r220256. This fixes PR21497. llvm-svn: 221456
2014-11-06 22:39:49 +08:00
; CHECK-NEXT: L0$pb:
; CHECK-NEXT: popl %eax
MCStreamer: Use "cfi" for CFI related temp labels. Choosing a "cfi" name makes the intend a bit clearer in an assembly dump and more importantly the assembly dumps are slightly more stable as the numbers don't move around anymore when unrelated code calls createTempSymbol() more or less often. As they are temp labels the name doesn't influence the generated object code. Differential Revision: https://reviews.llvm.org/D27244 llvm-svn: 288290
2016-12-01 07:48:26 +08:00
; CHECK-NEXT: Lcfi{{[0-9]+}}:
[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 21:06:20 +08:00
; CHECK-NEXT: .cfi_adjust_cfa_offset -4
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 22:39:49 +08:00
; CHECK-NEXT: addl LJTI0_0(,%ecx,4), %eax
; CHECK-NEXT: jmpl *%eax
; CHECK: LJTI0_0:
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 $2, %eax retl Differential Revision: http://reviews.llvm.org/D14496 llvm-svn: 253572
2015-11-20 00:35:08 +08:00
; CHECK-NEXT: .long LBB0_2-L0$pb
; CHECK-NEXT: .long LBB0_3-L0$pb
Compute the correct jump table entries on 32 bit windows. On 32 bit windows we use label differences and .set does not suppress rolocations, a combination that was not used before r220256. This fixes PR21497. llvm-svn: 221456
2014-11-06 22:39:49 +08:00
; CHECK-NEXT: .long LBB0_4-L0$pb
; CHECK-NEXT: .long LBB0_5-L0$pb
target triple = "i686--windows-itanium"
define i32 @f(i64 %x) {
bb0:
switch i64 %x, label %bb5 [
i64 1, label %bb1
i64 2, label %bb2
i64 3, label %bb3
i64 4, label %bb4
]
bb1:
br label %bb5
bb2:
br label %bb5
bb3:
br label %bb5
bb4:
br label %bb5
bb5:
%y = phi i32 [ 0, %bb0 ], [ 1, %bb1 ], [ 2, %bb2 ], [ 3, %bb3 ], [ 4, %bb4 ]
ret i32 %y
}