bootstrap/llvm16: Fix issues on pmmx

Use fast precision to avoid x87-related bugs in SSE register scheduling.
Import fix from LLVM 14 for the test failure caused by fast precision.

Ref: #1200
Closes: #1258

2 files changed, 253 insertions, 0 deletions

diff --git a/bootstrap/llvm16/APKBUILD b/bootstrap/llvm16/APKBUILD
index df88dd1b4..841085be8 100644
--- a/bootstrap/llvm16/APKBUILD
+++ b/bootstrap/llvm16/APKBUILD
@@ -24,6 +24,7 @@ source="https://github.com/llvm/llvm-project/releases/download/llvmorg-$pkgver/l
 	disable-FileSystemTest.CreateDir-perms-assert.patch
 	dyld-elf-ppc32.patch
 	exegesis-mcjit.patch
+	graph-diff-simple.txt
 	hexagon.patch
 	macho32.patch
 	musl-ppc64-elfv2.patch
@@ -97,12 +98,25 @@ prepare() {
 		test/tools/UpdateTestChecks \
 		test/ExecutionEngine/MCJIT/load-object-a.ll \
 		;
+	#1202
+	case $CARCH in
+	pmmx)
+		mv "$srcdir"/graph-diff-simple.txt \
+		test/tools/llvm-xray/X86/graph-diff-simple.txt ;;
+	esac
 }
 
 build() {
 	# Auto-detect it by guessing either.
 	ffi_include_dir="$(pkg-config --cflags-only-I libffi | sed 's|^-I||g')"
 
+	case $CTARGET_ARCH in
+	pmmx)
+		# The standard precision breaks more than it fixes; there are
+		# 4 failures in standard mode and only (different) 1 in fast.
+		export CXXFLAGS="$CXXFLAGS -fexcess-precision=fast";;
+	esac
+
 	# Disabled m68k because the endianness fix from llvm18 doesn't work.
 	cmake -G "Unix Makefiles" -Wno-dev \
 		-DCMAKE_BUILD_TYPE=Release \
@@ -259,6 +273,7 @@ e6fec46f3a1183774e4a47b81f3287adc5aa28ebdd52f614c1111fb157cd3137d1b86e04ca76a92b
 8e694af50a9f1f8a3dcf7c0e1ce1165237011767e3514271984877882962e492057efd16f0e6e303ee534a48c039c8ec00ed8a34eb9e9826b0324100292695f9  disable-FileSystemTest.CreateDir-perms-assert.patch
 962ea62f96927f397a234c8770fd5a41d5c8ef528de56da6da76908369ee0e9faca2fcba46b3957a928b8138b46c7c0d8c5f353088009e1921f9c3cfffd96081  dyld-elf-ppc32.patch
 5f24f99e31b8e0d1d7a7253be028df55f3524ff600c037404a4870ed22c02467f378b222d7fdd3d7af5b1ef006a90ec0c32c44122771e2ea8763eb62dcfca9dc  exegesis-mcjit.patch
+a1533f4b9d35e1069fd065fbeb5fedce96fa49fdb007f994d8921d8a04cf2caadca276bbd9553ff86040b0f9dfce489c385fa2a7434e2dee3732942e6914db4e  graph-diff-simple.txt
 807587a0c897d47a01a846c5c4f7cbf1f2d16437a163b66ee2381a7147e9d04b0141b2c76d022db61903d0d2841ddb267ba98c66c9e41501ca41837659743df8  hexagon.patch
 de9791cc476817782b553c4edab696132da4ed2b9a3d80dbf1b85b7dc7a8c5e4caf14f2f26e33c27cd80a91b36709d3b24caea910c0a6315ffbb297cb748468d  macho32.patch
 bec1fe4761dae33a8012a54b7bbdd179cac82febcd46ace1844772c06f207661c903f05fcb7a5ebbbece3e33a88b20a5d9b31b40e8a8cd5c626aec04cb6735be  musl-ppc64-elfv2.patch
diff --git a/bootstrap/llvm16/graph-diff-simple.txt b/bootstrap/llvm16/graph-diff-simple.txt
new file mode 100644
index 000000000..fa26daaf9
--- /dev/null
+++ b/bootstrap/llvm16/graph-diff-simple.txt
@@ -0,0 +1,238 @@
+#RUN: llvm-xray graph-diff -o - -c min -b min -m %S/Inputs/simple-instrmap.yaml \
+#RUN:  %S/Inputs/graph-diff-A.yaml %S/Inputs/graph-diff-B.yaml \
+#RUN:  | FileCheck %s -check-prefix=VCEC
+#RUN: llvm-xray graph-diff -o - -c min -m %S/Inputs/simple-instrmap.yaml \
+#RUN:  %S/Inputs/graph-diff-A.yaml %S/Inputs/graph-diff-B.yaml \
+#RUN:  | FileCheck %s -check-prefix=EC
+#RUN: llvm-xray graph-diff -o - -b min -m %S/Inputs/simple-instrmap.yaml \
+#RUN:  %S/Inputs/graph-diff-A.yaml %S/Inputs/graph-diff-B.yaml \
+#RUN:  | FileCheck %s -check-prefix=VC
+#RUN: llvm-xray graph-diff -o - -e min -v min -m %S/Inputs/simple-instrmap.yaml \
+#RUN:  %S/Inputs/graph-diff-A.yaml %S/Inputs/graph-diff-B.yaml \
+#RUN:  | FileCheck %s -check-prefix=ELVL
+#RUN: llvm-xray graph-diff -o - -e min -m %S/Inputs/simple-instrmap.yaml \
+#RUN:  %S/Inputs/graph-diff-A.yaml %S/Inputs/graph-diff-B.yaml \
+#RUN:  | FileCheck %s -check-prefix=EL
+#RUN: llvm-xray graph-diff -o - -v min -m %S/Inputs/simple-instrmap.yaml \
+#RUN:  %S/Inputs/graph-diff-A.yaml %S/Inputs/graph-diff-B.yaml \
+#RUN:  | FileCheck %s -check-prefix=VL
+#RUN: llvm-xray graph-diff -o - -v min -b min -m %S/Inputs/simple-instrmap.yaml \
+#RUN:  %S/Inputs/graph-diff-A.yaml %S/Inputs/graph-diff-B.yaml \
+#RUN:  | FileCheck %s -check-prefix=VLVC
+#RUN: llvm-xray graph-diff -o - -e min -c min -m %S/Inputs/simple-instrmap.yaml \
+#RUN:  %S/Inputs/graph-diff-A.yaml %S/Inputs/graph-diff-B.yaml \
+#RUN:  | FileCheck %s -check-prefix=ELEC
+
+#VCEC:      digraph xrayDiff {
+#VCEC-DAG:  F[[F0NO:[0-9]+]] [label="F0"]
+#VCEC-DAG:  F[[N1NO:[0-9]+]] [label="#1" color="#276419"]
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+#VCEC-DAG:  F{{.*}}[[F0NO]] -> F{{.*}}[[NANO]] [tooltip="F0 -> #10" label="" color="#00FF00" labelfontcolor="#00FF00" penwidth=1.00]
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+#VCEC-NEXT:}
+
+
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+#EC-NEXT:}
+
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+#VL-DAG:  F{{.*}}[[F0NO]] -> F{{.*}}[[N1NO]] [tooltip="F0 -> #1" label="" color="black" labelfontcolor="black" penwidth=1.00]
+#VL-DAG:  F{{.*}}[[F0NO]] -> F{{.*}}[[N2NO]] [tooltip="F0 -> #2" label="" color="black" labelfontcolor="black" penwidth=1.00]
+#VL-DAG:  F{{.*}}[[F0NO]] -> F{{.*}}[[N3NO]] [tooltip="F0 -> #3" label="" color="black" labelfontcolor="black" penwidth=1.00]
+#VL-DAG:  F{{.*}}[[F0NO]] -> F{{.*}}[[N4NO]] [tooltip="F0 -> #4" label="" color="black" labelfontcolor="black" penwidth=1.00]
+#VL-DAG:  F{{.*}}[[F0NO]] -> F{{.*}}[[N5NO]] [tooltip="F0 -> #5" label="" color="black" labelfontcolor="black" penwidth=1.00]
+#VL-DAG:  F{{.*}}[[F0NO]] -> F{{.*}}[[N6NO]] [tooltip="F0 -> #6" label="" color="black" labelfontcolor="black" penwidth=1.00]
+#VL-DAG:  F{{.*}}[[F0NO]] -> F{{.*}}[[N7NO]] [tooltip="F0 -> #7" label="" color="black" labelfontcolor="black" penwidth=1.00]
+#VL-DAG:  F{{.*}}[[F0NO]] -> F{{.*}}[[N8NO]] [tooltip="F0 -> #8" label="" color="black" labelfontcolor="black" penwidth=1.00]
+#VL-DAG:  F{{.*}}[[F0NO]] -> F{{.*}}[[N9NO]] [tooltip="F0 -> #9" label="" color="black" labelfontcolor="black" penwidth=1.00]
+#VL-DAG:  F{{.*}}[[F0NO]] -> F{{.*}}[[NANO]] [tooltip="F0 -> #10" label="" color="#00FF00" labelfontcolor="#00FF00" penwidth=1.00]
+#VL-DAG:  F{{.*}}[[F0NO]] -> F{{.*}}[[NBNO]] [tooltip="F0 -> #11" label="" color="#FF0000" labelfontcolor="#FF0000" penwidth=1.00]
+#VL-NEXT:}
+
+#VLVC:      digraph xrayDiff {
+#VLVC-NEXT: node [shape=record]
+#VLVC-DAG:  F[[F0NO:[0-9]+]] [label="F0"]
+#VLVC-DAG:  F[[N1NO:[0-9]+]] [label="{#1|800.00%}" color="#276419"]
+#VLVC-DAG:  F[[N2NO:[0-9]+]] [label="{#2|300.00%}" color="#276419"]
+#VLVC-DAG:  F[[N3NO:[0-9]+]] [label="{#3|133.33%}" color="#276419"]
+#VLVC-DAG:  F[[N4NO:[0-9]+]] [label="{#4|50.00%}" color="#9BCE61"]
+#VLVC-DAG:  F[[N5NO:[0-9]+]] [label="{#5|0.00%}" color="#F7F7F7"]
+#VLVC-DAG:  F[[N6NO:[0-9]+]] [label="{#6|-33.33%}" color="#F5C4E0"]
+#VLVC-DAG:  F[[N7NO:[0-9]+]] [label="{#7|-57.14%}" color="#E17FB4"]
+#VLVC-DAG:  F[[N8NO:[0-9]+]] [label="{#8|-75.00%}" color="#CB3088"]
+#VLVC-DAG:  F[[N9NO:[0-9]+]] [label="{#9|-88.89%}" color="#AD0E69"]
+#VLVC-DAG:  F[[NANO:[0-9]+]] [label="#10" color="#00FF00"]
+#VLVC-DAG:  F[[NBNO:[0-9]+]] [label="#11" color="#FF0000"]
+#VLVC-DAG:  F{{.*}}[[F0NO]] -> F{{.*}}[[N1NO]] [tooltip="F0 -> #1" label="" color="black" labelfontcolor="black" penwidth=1.00]
+#VLVC-DAG:  F{{.*}}[[F0NO]] -> F{{.*}}[[N2NO]] [tooltip="F0 -> #2" label="" color="black" labelfontcolor="black" penwidth=1.00]
+#VLVC-DAG:  F{{.*}}[[F0NO]] -> F{{.*}}[[N3NO]] [tooltip="F0 -> #3" label="" color="black" labelfontcolor="black" penwidth=1.00]
+#VLVC-DAG:  F{{.*}}[[F0NO]] -> F{{.*}}[[N4NO]] [tooltip="F0 -> #4" label="" color="black" labelfontcolor="black" penwidth=1.00]
+#VLVC-DAG:  F{{.*}}[[F0NO]] -> F{{.*}}[[N5NO]] [tooltip="F0 -> #5" label="" color="black" labelfontcolor="black" penwidth=1.00]
+#VLVC-DAG:  F{{.*}}[[F0NO]] -> F{{.*}}[[N6NO]] [tooltip="F0 -> #6" label="" color="black" labelfontcolor="black" penwidth=1.00]
+#VLVC-DAG:  F{{.*}}[[F0NO]] -> F{{.*}}[[N7NO]] [tooltip="F0 -> #7" label="" color="black" labelfontcolor="black" penwidth=1.00]
+#VLVC-DAG:  F{{.*}}[[F0NO]] -> F{{.*}}[[N8NO]] [tooltip="F0 -> #8" label="" color="black" labelfontcolor="black" penwidth=1.00]
+#VLVC-DAG:  F{{.*}}[[F0NO]] -> F{{.*}}[[N9NO]] [tooltip="F0 -> #9" label="" color="black" labelfontcolor="black" penwidth=1.00]
+#VLVC-DAG:  F{{.*}}[[F0NO]] -> F{{.*}}[[NANO]] [tooltip="F0 -> #10" label="" color="#00FF00" labelfontcolor="#00FF00" penwidth=1.00]
+#VLVC-DAG:  F{{.*}}[[F0NO]] -> F{{.*}}[[NBNO]] [tooltip="F0 -> #11" label="" color="#FF0000" labelfontcolor="#FF0000" penwidth=1.00]
+#VLVC-NEXT:}
+
+#ELEC:      digraph xrayDiff {
+#ELEC-DAG:  F[[F0NO:[0-9]+]] [label="F0"]
+#ELEC-DAG:  F[[N1NO:[0-9]+]] [label="#1" color="black"]
+#ELEC-DAG:  F[[N2NO:[0-9]+]] [label="#2" color="black"]
+#ELEC-DAG:  F[[N3NO:[0-9]+]] [label="#3" color="black"]
+#ELEC-DAG:  F[[N4NO:[0-9]+]] [label="#4" color="black"]
+#ELEC-DAG:  F[[N5NO:[0-9]+]] [label="#5" color="black"]
+#ELEC-DAG:  F[[N6NO:[0-9]+]] [label="#6" color="black"]
+#ELEC-DAG:  F[[N7NO:[0-9]+]] [label="#7" color="black"]
+#ELEC-DAG:  F[[N8NO:[0-9]+]] [label="#8" color="black"]
+#ELEC-DAG:  F[[N9NO:[0-9]+]] [label="#9" color="black"]
+#ELEC-DAG:  F[[NANO:[0-9]+]] [label="#10" color="#00FF00"]
+#ELEC-DAG:  F[[NBNO:[0-9]+]] [label="#11" color="#FF0000"]
+#ELEC-DAG:  F{{.*}}[[F0NO]] -> F{{.*}}[[N1NO]] [tooltip="F0 -> #1" label="800.00%" color="#276419" labelfontcolor="#276419" penwidth=8.00]
+#ELEC-DAG:  F{{.*}}[[F0NO]] -> F{{.*}}[[N2NO]] [tooltip="F0 -> #2" label="300.00%" color="#276419" labelfontcolor="#276419" penwidth=3.00]
+#ELEC-DAG:  F{{.*}}[[F0NO]] -> F{{.*}}[[N3NO]] [tooltip="F0 -> #3" label="133.33%" color="#276419" labelfontcolor="#276419" penwidth=1.33]
+#ELEC-DAG:  F{{.*}}[[F0NO]] -> F{{.*}}[[N4NO]] [tooltip="F0 -> #4" label="50.00%" color="#9BCE61" labelfontcolor="#9BCE61" penwidth=1.00]
+#ELEC-DAG:  F{{.*}}[[F0NO]] -> F{{.*}}[[N5NO]] [tooltip="F0 -> #5" label="0.00%" color="#F7F7F7" labelfontcolor="#F7F7F7" penwidth=1.00]
+#ELEC-DAG:  F{{.*}}[[F0NO]] -> F{{.*}}[[N6NO]] [tooltip="F0 -> #6" label="-33.33%" color="#F5C4E0" labelfontcolor="#F5C4E0" penwidth=1.00]
+#ELEC-DAG:  F{{.*}}[[F0NO]] -> F{{.*}}[[N7NO]] [tooltip="F0 -> #7" label="-57.14%" color="#E17FB4" labelfontcolor="#E17FB4" penwidth=1.00]
+#ELEC-DAG:  F{{.*}}[[F0NO]] -> F{{.*}}[[N8NO]] [tooltip="F0 -> #8" label="-75.00%" color="#CB3088" labelfontcolor="#CB3088" penwidth=1.00]
+#ELEC-DAG:  F{{.*}}[[F0NO]] -> F{{.*}}[[N9NO]] [tooltip="F0 -> #9" label="-88.89%" color="#AD0E69" labelfontcolor="#AD0E69" penwidth=1.00]
+#ELEC-DAG:  F{{.*}}[[F0NO]] -> F{{.*}}[[NANO]] [tooltip="F0 -> #10" label="" color="#00FF00" labelfontcolor="#00FF00" penwidth=1.00]
+#ELEC-DAG:  F{{.*}}[[F0NO]] -> F{{.*}}[[NBNO]] [tooltip="F0 -> #11" label="" color="#FF0000" labelfontcolor="#FF0000" penwidth=1.00]
+#ELEC-NEXT:}
+
+